Skip to content
https://lodz.pl

Security

· 13 checks — HTTP headers, CSP, TLS handshake, and cookie hygiene rolled into one auditable list.
SCORE
69
GRADE
D
FIX
5
REVIEW
4
PASS
4
INFO
0
Checks
13
4 PASS 4 REVIEW 5 FIX
D
Security Headers
Action
4 of 10 headers properly configured
FIX
4 of 10 headers properly configured
Warning::
HSTS max-age is too short (0s, should be ≥ 31536000s)
A short max-age leaves a window for downgrade attacks. Set max-age to at least 31536000 (1 year).
Got: max-age=0; Expected: max-age=31536000; includeSubDomains
Info::
X-Content-Type-Options is properly configured
Got: nosniff
Warning::
X-Frame-Options header is missing
This header prevents clickjacking by controlling who can embed your page in a frame. Set it to DENY or SAMEORIGIN.
Expected: DENY
Warning::
Referrer-Policy header is missing
Controls how much referrer information is sent with requests. Set to 'strict-origin-when-cross-origin' or stricter.
Expected: strict-origin-when-cross-origin
Warning::
Permissions-Policy header is missing
Controls which browser features (camera, microphone, geolocation) are allowed. Set it to restrict unused features.
Expected: geolocation=(), camera=(), microphone=()
Info::
Content-Security-Policy is present
Got: frame-ancestors 'self' https://lckm.dev02.vobacom.info https://www.sse.lodz.pl h…
Warning::
Cross-Origin-Opener-Policy header is missing
COOP isolates your browsing context, preventing cross-origin side-channel attacks. Set to 'same-origin'.
Expected: same-origin
Warning::
Cross-Origin-Embedder-Policy header is missing
COEP prevents loading cross-origin resources without explicit permission. Required for SharedArrayBuffer and high-resolution timers.
Expected: require-corp
Info::
X-Powered-By header is not present
Info::
Server header is present without version info
Got: lodzidea

A short max-age leaves a window for downgrade attacks. Set max-age to at least 31536000 (1 year).

Expected: max-age=31536000; includeSubDomains
Why this matters

Short HSTS max-age leaves a downgrade-attack window every time the cache expires — set ≥ 1 year.

Learn more ▾

max-age below 31536000 (1 year) is below industry recommendation. The browser forgets the HSTS policy and re-exposes first-visit downgrade attacks. Set to 63072000 (2 years) and add `includeSubDomains; preload` to qualify for the HSTS preload list.

Source: RFC 6797 / hstspreload.org

This header prevents clickjacking by controlling who can embed your page in a frame. Set it to DENY or SAMEORIGIN.

Expected: DENY
Why this matters

Without frame protection, your site can be embedded in a hostile page and used for clickjacking.

Learn more ▾

Clickjacking overlays your site under a transparent malicious page so users click invisible buttons. Setting X-Frame-Options: DENY (or a modern frame-ancestors CSP directive) blocks the embedding entirely. There's almost never a legitimate reason to allow it.

Source: OWASP / MDN

Controls how much referrer information is sent with requests. Set to 'strict-origin-when-cross-origin' or stricter.

Expected: strict-origin-when-cross-origin
Why this matters

Default browser behavior leaks full URLs (including query params and tokens) to every third-party resource — set a strict policy.

Learn more ▾

Without a Referrer-Policy header, browsers send the full referring URL with images, scripts, and fonts loaded from third-party origins. URLs containing tokens, user IDs, or session params end up in third-party logs. Set `Referrer-Policy: strict-origin-when-cross-origin` (or stricter) to limit leakage.

Source: MDN / W3C

Controls which browser features (camera, microphone, geolocation) are allowed. Set it to restrict unused features.

Expected: geolocation=(), camera=(), microphone=()
Why this matters

Permissions-Policy locks down browser APIs you don't use — without it, every page can request camera/mic/geolocation if XSS lands.

Learn more ▾

By default every page can request the camera, microphone, geolocation, payment APIs, and dozens more. Permissions-Policy turns off the ones you don't need so a future bug can't quietly start using them. It's a defense-in-depth header — one line, big surface reduction.

Source: MDN / W3C

COOP isolates your browsing context, preventing cross-origin side-channel attacks. Set to 'same-origin'.

Expected: same-origin
Why this matters

COOP isolates your top-level browsing context from cross-origin windows — without it, popup-based side-channel attacks remain possible.

Learn more ▾

Cross-Origin-Opener-Policy: same-origin prevents cross-origin pages from sharing a browsing-context group with yours. This blocks cross-window references that enable Spectre-style timing attacks and tab-nabbing. Required if you want to enable SharedArrayBuffer.

Source: MDN / web.dev

COEP prevents loading cross-origin resources without explicit permission. Required for SharedArrayBuffer and high-resolution timers.

Expected: require-corp
Why this matters

COEP enforces that all embedded resources opt-in to cross-origin embedding — required for cross-origin isolation features.

Learn more ▾

Cross-Origin-Embedder-Policy: require-corp ensures every embedded resource (script, iframe, image) explicitly allows being loaded cross-origin. Combined with COOP, this enables the cross-origin-isolated context that unlocks SharedArrayBuffer, high-resolution timers, and other powerful APIs.

Source: MDN / web.dev

F
Subresource Integrity
Action
0 of 25 external resources have SRI
FIX
0 of 25 external resources have SRI
Warning::
External script from www.google-analytics.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://www.google-analytics.com/analytics.js
Warning::
External script from www.googletagmanager.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://www.googletagmanager.com/gtag/js?id=GT-5DH5KDR&cx=c&gtm=4e64k1h2
Warning::
External script from www.googletagmanager.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://www.googletagmanager.com/gtag/js?id=UA-25825547-40&cx=c&gtm=4e64k1h2
Warning::
External script from connect.facebook.net lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://connect.facebook.net/pl_PL/bundle/sdk.js/
Warning::
External script from pagead2.googlesyndication.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202604170101/show_ads_impl.js?bust=31097971
Warning::
External script from www.youtube.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://www.youtube.com/s/player/1bb6ee63/www-widgetapi.vflset/www-widgetapi.js
Warning::
External script from platform.twitter.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://platform.twitter.com/widgets.js
Warning::
External script from connect.facebook.net lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://connect.facebook.net/signals/config/528537619394728?v=2.9.303&r=stable&domain=lodz.pl&hme=97937018cefade17726f0472876fc101316b2ce9008a35a6a5a7977d7436151a&ex_m=104%2C205%2C154%2C22%2C72%2C73%2C145%2C68%2C67%2C11%2C162%2C90%2C16%2C138%2C127%2C39%2C75%2C78%2C134%2C159%2C164%2C8%2C4%2C5%2C7%2C6%2C3%2C91%2C101%2C165%2C170%2C219%2C62%2C186%2C187%2C55%2C276%2C30%2C74%2C231%2C230%2C229%2C23%2C33%2C103%2C61%2C10%2C63%2C97%2C98%2C99%2C105%2C130%2C31%2C29%2C132%2C133%2C129%2C128%2C155%2C76%2C158%2C156%2C157%2C50%2C60%2C123%2C15%2C161%2C45%2C263%2C264%2C262%2C26%2C27%2C28%2C48%2C146%2C77%2C112%2C18%2C20%2C44%2C40%2C42%2C41%2C83%2C92%2C96%2C110%2C144%2C147%2C46%2C111%2C24%2C21%2C119%2C69%2C36%2C149%2C148%2C150%2C141%2C139%2C25%2C35%2C59%2C109%2C160%2C70%2C17%2C152%2C114%2C81%2C66%2C19%2C85%2C86%2C116%2C84%2C136%2C135%2C34%2C278%2C293%2C212%2C201%2C202%2C200%2C296%2C288%2C52%2C213%2C107%2C131%2C80%2C121%2C54%2C47%2C49%2C113%2C120%2C126%2C58%2C64%2C151%2C115%2C37%2C32%2C53%2C56%2C100%2C163%2C1%2C124%2C14%2C122%2C12%2C2%2C57%2C93%2C65%2C118%2C89%2C88%2C166%2C167%2C94%2C95%2C9%2C125%2C102%2C51%2C142%2C87%2C79%2C71%2C117%2C106%2C43%2C143%2C0%2C82%2C137%2C140%2C153%2C38%2C108%2C13%2C168
Warning::
External script from connect.facebook.net lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://connect.facebook.net/en_US/fbevents.js
Warning::
External script from ads.biblioteka.lodz.pl lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: //ads.biblioteka.lodz.pl/www/delivery/asyncjs.php
Warning::
External script from www.googletagmanager.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://www.googletagmanager.com/gtag/js?id=UA-25825547-40
Warning::
External script from www.googletagmanager.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://www.googletagmanager.com/gtag/js?id=G-30F084ZHSL
Warning::
External script from www.googletagmanager.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://www.googletagmanager.com/gtag/js?id=GT-5DH5KDR
Warning::
External script from pagead2.googlesyndication.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-6662457014686579
Warning::
External link from newsletter.uml.lodz.pl lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://newsletter.uml.lodz.pl/stylesheets/core/pages/webFormV2/public/gr_wf_v2.css
Warning::
External script from googleads.g.doubleclick.net lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://googleads.g.doubleclick.net/pagead/viewthroughconversion/557285855/?random=1776890225690&cv=11&fst=1776890225690&bg=ffffff&guid=ON&async=1&en=gtag.config&gtm=45Pe64k0v874128636za200zb9126819483zd9126819483xec&gcd=13l3l3l3l1l1&dma=0&tag_exp=0~115938466~115938469~117266400~117384405~118463262&u_w=800&u_h=600&url=https%3A%2F%2Flodz.pl%2F&rcb=14&frm=0&tiba=%C5%81%C3%93D%C5%B9.PL&hn=www.googleadservices.com&npa=0&pscdl=noapi&auid=1645909830.1776890226&uaa=x86&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uamb=0&uam=&uap=Linux&uapv=&uaw=0&data=event%3Dgtag.config&rfmt=3&fmt=4
Warning::
External script from googleads.g.doubleclick.net lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://googleads.g.doubleclick.net/pagead/viewthroughconversion/11108391222/?random=1776890225733&cv=11&fst=1776890225733&bg=ffffff&guid=ON&async=1&en=gtag.config&gtm=45Pe64k0v874128636za200zb9126819483zd9126819483xec&gcd=13l3l3l3l1l1&dma=0&tag_exp=0~115938466~115938469~117266400~117384405~117512543~118463262&u_w=800&u_h=600&url=https%3A%2F%2Flodz.pl%2F&rcb=14&frm=0&tiba=%C5%81%C3%93D%C5%B9.PL&hn=www.googleadservices.com&npa=0&pscdl=noapi&auid=1645909830.1776890226&uaa=x86&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uamb=0&uam=&uap=Linux&uapv=&uaw=0&data=event%3Dgtag.config&rfmt=3&fmt=4
Warning::
External script from googleads.g.doubleclick.net lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://googleads.g.doubleclick.net/pagead/viewthroughconversion/665139254/?random=1776890225750&cv=11&fst=1776890225750&bg=ffffff&guid=ON&async=1&en=gtag.config&gtm=45Pe64k0v874128636za200zb9126819483zd9126819483xec&gcd=13l3l3l3l1l1&dma=0&tag_exp=0~115938466~115938469~117266400~117384405~117512543~118463262&u_w=800&u_h=600&url=https%3A%2F%2Flodz.pl%2F&rcb=14&frm=0&tiba=%C5%81%C3%93D%C5%B9.PL&hn=www.googleadservices.com&npa=0&pscdl=noapi&auid=1645909830.1776890226&uaa=x86&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uamb=0&uam=&uap=Linux&uapv=&uaw=0&data=event%3Dgtag.config&rfmt=3&fmt=4
Warning::
External script from fundingchoicesmessages.google.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://fundingchoicesmessages.google.com/i/ca-pub-6662457014686579?href=https%3A%2F%2Flodz.pl&ers=2
Warning::
External script from fundingchoicesmessages.google.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://fundingchoicesmessages.google.com/f/AGSKWxVVUBAVBdVtVWbSJlFH731QvkKeSZ60nGRNSRTNQVj0YKJV8Dwa4Ig4fOIQWZZb5ptHToye0fYkb1fDjZ-OSV9gr6MukUpUo7MK7QHToMujNNFcPIl4Qp_1qskP7ucTxq8ZMi5C2A==?fccs=W251bGwsbnVsbCxudWxsLG51bGwsbnVsbCxudWxsLFsxNzc2ODkwMjI2LDUxOTAwMDAwMF0sbnVsbCxudWxsLG51bGwsW251bGwsWzddXSwiaHR0cHM6Ly9sb2R6LnBsLyIsbnVsbCxbWzgsInBTSmtvMTk2SUgwIl0sWzksImVuLVVTIl0sWzE4LCJbW1tudWxsLDI3MzddXV0iXSxbMjMsIjE3NzY4OTAyMjYiXSxbMzUsIjE3NzY4OTAyMjYiXSxbMTksIjIiXSxbMTcsIlswXSJdLFsyNCwiIl0sWzI5LCJmYWxzZSJdXV0
Warning::
External script from fundingchoicesmessages.google.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://fundingchoicesmessages.google.com/f/AGSKWxVsTD_WTwsFlBPkTsN9nBXvQRxPH8BCGea7NneDxaby2Me0HJlcjTRGsYvn-MJi0cfNCG-3wLLKpHB1R1tfownAEEMVSFm3N6L_QWc6qB5hGTvaGQP3ccT9s4vE3BE_mFcdVsw2-g==?fccs=W251bGwsbnVsbCxudWxsLG51bGwsbnVsbCxudWxsLFsxNzc2ODkwMjI2LDYxNjAwMDAwMF0sbnVsbCxudWxsLG51bGwsW251bGwsWzcsOV0sbnVsbCwyLG51bGwsInBsIl0sImh0dHBzOi8vbG9kei5wbC8iLG51bGwsW1s4LCJwU0prbzE5NklIMCJdLFs5LCJlbi1VUyJdLFsxOCwiW1tbbnVsbCwyNzM3XV1dIl0sWzIzLCIxNzc2ODkwMjI2Il0sWzM1LCIxNzc2ODkwMjI2Il0sWzE5LCIyIl0sWzE3LCJbMF0iXSxbMjQsIiJdLFsyOSwiZmFsc2UiXV1d
Warning::
External script from fundingchoicesmessages.google.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://fundingchoicesmessages.google.com/f/AGSKWxXbwldd5pmb86ZYSjYPsmUcRnsHuAp8SUV2ZVC-hpV7fUDLAKKw3XVmPc41_npNtj6ILzc-4no_TUU25t8XQUFhWozI-l2hIivjMGsZUYmMH0YASG4bWXGC3yaxF19Vt6d1CtvoQQ==?fccs=W251bGwsbnVsbCxudWxsLG51bGwsbnVsbCxudWxsLFsxNzc2ODkwMjI3LDM0NzAwMDAwMF0sbnVsbCxudWxsLG51bGwsW251bGwsWzcsOSw2XSxudWxsLDIsbnVsbCwicGwiLG51bGwsbnVsbCxudWxsLG51bGwsbnVsbCwxXSwiaHR0cHM6Ly9sb2R6LnBsLyIsbnVsbCxbWzgsInBTSmtvMTk2SUgwIl0sWzksImVuLVVTIl0sWzE4LCJbW1tudWxsLDI3MzddXV0iXSxbMjMsIjE3NzY4OTAyMjYiXSxbMzUsIjE3NzY4OTAyMjYiXSxbMTksIjIiXSxbMTcsIlswXSJdLFsyNCwiIl0sWzI5LCJmYWxzZSJdXV0
Warning::
External script from newsletter.uml.lodz.pl lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://newsletter.uml.lodz.pl/view_webform_v2.js?u=i&webforms_id=E
Warning::
External script from connect.facebook.net lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://connect.facebook.net/pl_PL/sdk.js#xfbml=1&version=v11.0
Warning::
External script from www.youtube.com lacks integrity attribute
Without SRI, if this CDN is compromised, attackers could inject malicious code.
Got: https://www.youtube.com/player_api
SRI Coverage 0 / 25 of external resources have integrity hashes
TagDomainIntegrity
<script>www.google-analytics.com✗ Missing
<script>www.googletagmanager.com✗ Missing
<script>www.googletagmanager.com✗ Missing
<script>connect.facebook.net✗ Missing
<script>pagead2.googlesyndication.com✗ Missing
<script>www.youtube.com✗ Missing
<script>platform.twitter.com✗ Missing
<script>connect.facebook.net✗ Missing
<script>connect.facebook.net✗ Missing
<script>ads.biblioteka.lodz.pl✗ Missing
<script>www.googletagmanager.com✗ Missing
<script>www.googletagmanager.com✗ Missing
<script>www.googletagmanager.com✗ Missing
<script>pagead2.googlesyndication.com✗ Missing
<link>newsletter.uml.lodz.pl✗ Missing
<script>googleads.g.doubleclick.net✗ Missing
<script>googleads.g.doubleclick.net✗ Missing
<script>googleads.g.doubleclick.net✗ Missing
<script>fundingchoicesmessages.google.com✗ Missing
<script>fundingchoicesmessages.google.com✗ Missing
<script>fundingchoicesmessages.google.com✗ Missing
<script>fundingchoicesmessages.google.com✗ Missing
<script>newsletter.uml.lodz.pl✗ Missing
<script>connect.facebook.net✗ Missing
<script>www.youtube.com✗ Missing
D
Email Security
Action
DMARC: none
FIX
DMARC: none
Warning::
DMARC policy is none — monitoring only
This only monitors, it doesn't block spoofed emails. Change to p=quarantine or p=reject.
DMARC
Policy none — monitoring only, does not block spoofing Record v=DMARC1; p=none; adkim=r; aspf=r; fo=s; pct=100; rf=afrf; ri=86400;

This only monitors, it doesn't block spoofed emails. Change to p=quarantine or p=reject.

Why this matters

DMARC p=none collects reports but doesn't actually block spoofed mail — phishing emails still reach inboxes.

Learn more ▾

DMARC's three policies are p=none (monitor only), p=quarantine (mark as spam), and p=reject (bounce). Most domains start at p=none to gather data, but stay there forever, leaving spoofers unblocked. After 30 days of clean DMARC reports, graduate to p=quarantine, then p=reject.

Source: DMARC.org / NIST

D
Permissions-Policy
Action
No header set
FIX
No header set
Warning::
No Permissions-Policy header
Consider adding a Permissions-Policy header to restrict browser feature access from embedded content.

No Permissions-Policy header set.

Without this header, embedded iframes can request access to sensitive device features.

Suggested header
Permissions-Policy: camera=(), microphone=(), geolocation=(), payment=(), usb=()
D
security.txt
Action
No /.well-known/security.txt published
FIX

security.txt

No security.txt found at /.well-known/security.txt

B
Content Security Policy
6 of 10 CSP checks passed
REVIEW
6 of 10 CSP checks passed
Info::
Raw CSP policy
Got: frame-ancestors 'self' https://lckm.dev02.vobacom.info https://www.sse.lodz.pl https://lodz.travel https://www.zjazdowa.com.pl https://www.lcf.pl https://makis.pl https://www.mpolodz.pl https://www.mcmsrodmiescie.pl https://expo-lodz.pl http://expo-lodz.pl http://bionanopark.pl/ https://www.wtbs.pl https://www.lodz-airport.pl https://*.lodz.pl https://ads.biblioteka.lodz.pl; default-src 'self'; connect-src https://lodz.pl https://*.lodz.pl https://*.analytics.google.com https://pagead2.googlesyndication.com/getconfig/ https://fundingchoicesmessages.google.com/ https://p.clarity.ms/collect https://region1.google-analytics.com https://*.facebook.com/ https://ads.biblioteka.lodz.pl/www/delivery/asyncspc.php https://stats.g.doubleclick.net/ https://www.google-analytics.com/ https://connect.facebook.net/; font-src 'self' https://fonts.gstatic.com/; form-action 'self' https://newsletter.uml.lodz.pl https://www.facebook.com/; frame-src 'self' https://tpc.googlesyndication.com/ https://googleads.g.doubleclick.net/ https://td.doubleclick.net/ https://www.google.com/ https://kuula.co/ https://www.youtube-nocookie.com https://ads.biblioteka.lodz.pl https://newsletter.uml.lodz.pl https://platform.twitter.com https://uml.lodz.pl https://*.facebook.com/ https://connect.facebook.net; img-src 'self' https://c.clarity.ms https://www.gstatic.com/ https://fundingchoicesmessages.google.com/ https://lh3.googleusercontent.com/ https://widget.jutromedical.com https://2k.trackgecko.pl https://region1.google-analytics.com https://googleads.g.doubleclick.net https://ads.biblioteka.lodz.pl/www/ https://multimedia.newsletter.uml.lodz.pl data: https://www.facebook.com/ https://www.google-analytics.com https://www.google.com https://www.google.pl; media-src 'self'; script-src 'self' 'unsafe-inline' https://cookies.uml.lodz.pl/embed.js https://www.clarity.ms/tag/ https://tpc.googlesyndication.com/ https://www.clarity.ms/s/0.7.20/clarity.js https://fundingchoicesmessages.google.com/ https://www.clarity.ms/tag/jnbug4lfqt https://pagead2.googlesyndication.com/pagead/ https://widget.jutromedical.com https://www.googleadservices.com/ https://www.google.com/pagead/ https://www.google.pl https://googleads.g.doubleclick.net https://ads.biblioteka.lodz.pl https://connect.facebook.net/ https://newsletter.uml.lodz.pl/ https://platform.twitter.com/ https://www.google-analytics.com/ https://www.googletagmanager.com/ https://www.youtube.com/; style-src 'self' 'unsafe-inline' https://fonts.googleapis.com/ https://widget.jutromedical.com https://newsletter.uml.lodz.pl/; worker-src 'self';
Info::
default-src directive is set
Got: default-src 'self'
Critical::
'unsafe-inline' found in script source
'unsafe-inline' allows inline <script> tags, defeating CSP against XSS. Remove it and use nonces or hashes instead.
Got: script-src 'self' 'unsafe-inline' https://cookies.uml.lodz.pl/embed.js https://www.clarity.ms/tag/ https://tpc.googlesyndication.com/ https://www.clarity.ms/s/0.7.20/clarity.js https://fundingchoicesmessages.google.com/ https://www.clarity.ms/tag/jnbug4lfqt https://pagead2.googlesyndication.com/pagead/ https://widget.jutromedical.com https://www.googleadservices.com/ https://www.google.com/pagead/ https://www.google.pl https://googleads.g.doubleclick.net https://ads.biblioteka.lodz.pl https://connect.facebook.net/ https://newsletter.uml.lodz.pl/ https://platform.twitter.com/ https://www.google-analytics.com/ https://www.googletagmanager.com/ https://www.youtube.com/
Info::
No 'unsafe-eval' in script source
Info::
No wildcard in script source
Info::
object-src falls back to default-src
Warning::
base-uri directive is missing
Without base-uri, attackers can inject a <base> tag to hijack relative URLs. Set it to 'self' or 'none'.
Expected: base-uri 'self'
Info::
frame-ancestors directive is set
Got: frame-ancestors 'self' https://lckm.dev02.vobacom.info https://www.sse.lodz.pl https://lodz.travel https://www.zjazdowa.com.pl https://www.lcf.pl https://makis.pl https://www.mpolodz.pl https://www.mcmsrodmiescie.pl https://expo-lodz.pl http://expo-lodz.pl http://bionanopark.pl/ https://www.wtbs.pl https://www.lodz-airport.pl https://*.lodz.pl https://ads.biblioteka.lodz.pl
Info::
form-action directive is set
Got: form-action 'self' https://newsletter.uml.lodz.pl https://www.facebook.com/
Info::
upgrade-insecure-requests is not set
This directive upgrades HTTP resources to HTTPS automatically, preventing mixed content.
Expected: upgrade-insecure-requests

'unsafe-inline' allows inline <script> tags, defeating CSP against XSS. Remove it and use nonces or hashes instead.

Why this matters

Unsafe value (unsafe-inline, unsafe-eval) in script-src defeats CSP's main protection — XSS injections can execute again.

Learn more ▾

unsafe-inline allows inline <script> tags; unsafe-eval allows eval() and similar. Both are necessary for some legacy code but explicitly dangerous. Migrate to nonces (per-page random tokens) or hashes (per-script SHA-256) instead.

Source: OWASP CSP / MDN

Without base-uri, attackers can inject a <base> tag to hijack relative URLs. Set it to 'self' or 'none'.

Expected: base-uri 'self'
Why this matters

Missing base-uri in CSP leaves a base-tag injection attack path open even on otherwise strict policies.

Learn more ▾

A common omission: developers add CSP for script-src and frame-ancestors but forget base-uri. The result is a CSP that looks strict but lets an attacker rewrite every URL on the page via <base href>. Add `base-uri 'self'` to close the gap.

Source: MDN CSP

This directive upgrades HTTP resources to HTTPS automatically, preventing mixed content.

Expected: upgrade-insecure-requests
Why this matters

Without upgrade-insecure-requests, any HTTP subresource link survives as a mixed-content warning instead of auto-upgrading.

Learn more ▾

Adding `upgrade-insecure-requests` to your CSP turns every http:// subresource fetch into https:// at the browser layer. One-line defense against accidental mixed content from legacy links or third-party widgets.

Source: MDN CSP

Parsed Policy

frame-ancestors 'self'https://lckm.dev02.vobacom.infohttps://www.sse.lodz.plhttps://lodz.travelhttps://www.zjazdowa.com.plhttps://www.lcf.plhttps://makis.plhttps://www.mpolodz.plhttps://www.mcmsrodmiescie.plhttps://expo-lodz.plhttp://expo-lodz.plhttp://bionanopark.pl/https://www.wtbs.plhttps://www.lodz-airport.plhttps://*.lodz.plhttps://ads.biblioteka.lodz.pl
default-src 'self'
connect-src https://lodz.plhttps://*.lodz.plhttps://*.analytics.google.comhttps://pagead2.googlesyndication.com/getconfig/https://fundingchoicesmessages.google.com/https://p.clarity.ms/collecthttps://region1.google-analytics.comhttps://*.facebook.com/https://ads.biblioteka.lodz.pl/www/delivery/asyncspc.phphttps://stats.g.doubleclick.net/https://www.google-analytics.com/https://connect.facebook.net/
font-src 'self'https://fonts.gstatic.com/
form-action 'self'https://newsletter.uml.lodz.plhttps://www.facebook.com/
frame-src 'self'https://tpc.googlesyndication.com/https://googleads.g.doubleclick.net/https://td.doubleclick.net/https://www.google.com/https://kuula.co/https://www.youtube-nocookie.comhttps://ads.biblioteka.lodz.plhttps://newsletter.uml.lodz.plhttps://platform.twitter.comhttps://uml.lodz.plhttps://*.facebook.com/https://connect.facebook.net
img-src 'self'https://c.clarity.mshttps://www.gstatic.com/https://fundingchoicesmessages.google.com/https://lh3.googleusercontent.com/https://widget.jutromedical.comhttps://2k.trackgecko.plhttps://region1.google-analytics.comhttps://googleads.g.doubleclick.nethttps://ads.biblioteka.lodz.pl/www/https://multimedia.newsletter.uml.lodz.pldata:https://www.facebook.com/https://www.google-analytics.comhttps://www.google.comhttps://www.google.pl
media-src 'self'
script-src 'self''unsafe-inline'https://cookies.uml.lodz.pl/embed.jshttps://www.clarity.ms/tag/https://tpc.googlesyndication.com/https://www.clarity.ms/s/0.7.20/clarity.jshttps://fundingchoicesmessages.google.com/https://www.clarity.ms/tag/jnbug4lfqthttps://pagead2.googlesyndication.com/pagead/https://widget.jutromedical.comhttps://www.googleadservices.com/https://www.google.com/pagead/https://www.google.plhttps://googleads.g.doubleclick.nethttps://ads.biblioteka.lodz.plhttps://connect.facebook.net/https://newsletter.uml.lodz.pl/https://platform.twitter.com/https://www.google-analytics.com/https://www.googletagmanager.com/https://www.youtube.com/
style-src 'self''unsafe-inline'https://fonts.googleapis.com/https://widget.jutromedical.comhttps://newsletter.uml.lodz.pl/
worker-src 'self'
B
CORS Configuration
No CORS headers
REVIEW
No CORS headers
Info::
No CORS headers present — secure default
CORS Configuration ✓ Secure

No CORS headers detected.

Cross-origin requests are blocked by browser same-origin policy.

Origin reflection test

Some servers mirror the request Origin header, which can be exploited. Test manually:

curl -sI -H "Origin: https://evil.com" <url> | grep -i access-control
C
Known vulnerability matches
Action
6 known vulnerability match(es) against detected tech
REVIEW

Known Vulnerabilities

LibraryVersionSeveritySummaryFixed In
jQuery2.2.4lowjQuery 1.x and 2.x are End-of-Life and no longer receiving security updates2.999.999
jQuery2.2.4medium3rd party CORS request may execute3.0.0-beta1
jQuery2.2.4mediumparseHTML() executes scripts in event handlers3.0.0
jQuery2.2.4mediumjQuery before 3.4.0, as used in Drupal, Backdrop CMS, and other products, mishandles jQuery.extend(true, {}, ...) because of Object.prototype pollution3.4.0
jQuery2.2.4mediumpassing HTML containing <option> elements from untrusted sources - even after sanitizing it - to one of jQuery's DOM manipulation methods (i.e. .html(), .append(), and others) may execute untrusted code.3.5.0
jQuery2.2.4mediumRegex in its jQuery.htmlPrefilter sometimes may introduce XSS3.5.0
B
Transport Security
HTTP/3, HSTS, and TLS version analysis
REVIEW
HTTP/3, HSTS, and TLS version analysis
Info::
HTTP/3 (QUIC) not advertised
HTTP/3 eliminates head-of-line blocking. If your CDN supports it, consider enabling it.
Warning::
HSTS max-age is short: 0 days
HSTS max-age should be at least 1 year (31536000 seconds).
Got: max-age=0 (expected 31536000)
Info::
HSTS missing includeSubDomains
Without includeSubDomains, HSTS only protects the exact domain.
Info::
TLS 1.3 in use (fastest handshake, 1-RTT)
A+
TLS & Certificates
TLS 1.3, 7 checks passed
PASS
TLS 1.3, 7 checks passed
Info::
TLS 1.3 is used
Got: TLS 1.3
Info::
Strong cipher suite is used
Got: TLS_AES_256_GCM_SHA384
Info::
HTTP/2 is not negotiated
HTTP/2 provides multiplexing and header compression for better performance.
Got: http/1.1
Info::
Certificate is valid (expires in 65 days)
Got: 2026-06-26T22:21:03Z
Info::
Certificate chain has 2 certificates
Info::
Certificate uses modern signature algorithm
Got: SHA256-RSA
Info::
Certificate covers 2 domain(s)
Got: lodz.pl, www.lodz.pl
Info::
Certificate is issued by a trusted CA
Got: CN=R12,O=Let's Encrypt,C=US

HTTP/2 provides multiplexing and header compression for better performance.

Why this matters

HTTP/1.1 forces the browser to make sequential requests, multiplying latency on every page.

Learn more ▾

HTTP/2 (and HTTP/3) multiplex many requests over a single connection, eliminating head-of-line blocking. HTTP/1.1 forces the browser to either queue requests or open many parallel connections — both worse. Most modern web servers support HTTP/2 with one config line.

Source: MDN Web Docs

Connection
Protocol
TLS 1.3
Cipher Suite
TLS_AES_256_GCM_SHA384
HTTP Version
HTTP/1.1

Certificate Chain

Leaf Certificate
Subject CN=lodz.plIssuer CN=R12,O=Let's Encrypt,C=USValid 2026-03-28T22:21:04Z → 2026-06-26T22:21:03ZExpires in 65 days SANs lodz.pl, www.lodz.plSignature SHA256-RSASerial 5c998bcb47e249c10d699ed9203a9f50f33
Intermediate (CA Certificate)
Subject CN=R12,O=Let's Encrypt,C=USIssuer CN=ISRG Root X1,O=Internet Security Research Group,C=USValid 2024-03-13T00:00:00Z → 2027-03-12T23:59:59ZExpires in 324 days Signature SHA256-RSASerial c212324b70a9b49171dc40f7e285263c
A+
Cookie Security
No cookies set — no cookie security risks
PASS
No cookies set — no cookie security risks
Info::
No cookies set — no cookie security risks

No cookies detected — no cookie security risks to report.

A+
JS Library Vulnerabilities
No known vulnerabilities
PASS
No known vulnerabilities
Info::
No known JavaScript library vulnerabilities detected

No known JavaScript library vulnerabilities detected.

A+
Information Leakage
No exposures
PASS
No exposures
Info::
No security.txt found
Consider adding a security.txt at /.well-known/security.txt.
Info::
No sensitive files exposed

No sensitive files exposed — all paths returned 404.

PathStatusCategoryRisk
/.git/HEAD✓ Not foundVersion Control—
/.git/config✓ Not foundVersion Control—
/.svn/entries✓ Not foundVersion Control—
/.env✓ Not foundConfiguration—
/.env.local✓ Not foundConfiguration—
/.env.production✓ Not foundConfiguration—
/wp-config.php✓ Not foundConfiguration—
/.htaccess✓ Not foundConfiguration—
/phpinfo.php✓ Not foundDebug—
/server-status✓ Not foundDebug—
/server-info✓ Not foundDebug—
/.well-known/security.txt✓ Not foundSecurity Policy—
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

Send Feedback