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Security

· 12 checks — HTTP headers, CSP, TLS handshake, and cookie hygiene rolled into one auditable list.
SCORE
79
GRADE
C
FIX
3
REVIEW
2
PASS
7
INFO
0
Checks
12
7 PASS 2 REVIEW 3 FIX
D
Content Security Policy
Action
4 of 10 CSP checks passed
FIX
4 of 10 CSP checks passed
Info::
Raw CSP policy
Got: default-src 'none'; script-src 'self' 'unsafe-inline' 'unsafe-eval' data: https://ams.wpml.org https://www.paypal.com/ https://www.paypalobjects.com/ https://dataguard.azureedge.net https://stats.nextcloud.com/ https://cdn.matomo.cloud https://*.stripe.com https://nextcloud.matomo.cloud https://ajax.googleapis.com/ https://www.youtube.com; connect-src 'self' https://www.paypal.com https://*.stripe.com https://dataguard.azureedge.net https://my.dataguard.de https://stats.nextcloud.com/ https://*.wpml.org https://cdn.matomo.cloud https://nextcloud.matomo.cloud https://ipinfo.io/json; img-src 'self' data: *.openstreetmap.org https://www.paypalobjects.com https://t.paypal.com/ https://dataguard.azureedge.net https://*.nextcloud.com https://*.w.org https://secure.gravatar.com https://i.ytimg.com https://i.vimeocdn.com https://nextcloud.matomo.cloud; style-src 'unsafe-inline' 'self' https://dataguard.azureedge.net https://*.wpml.org https://nextcloud.matomo.cloud; font-src 'self' data: https://nextcloud.matomo.cloud; media-src 'self' https://www.youtube.com https://download.nextcloud.com; frame-src 'self' blob: https://www.paypal.com https://www.youtube.com https://www.youtube-nocookie.com https://player.vimeo.com https://*.nextcloud.com https://*.stripe.com https://www.openstreetmap.org https://nextcloud.matomo.cloud; worker-src 'self' blob: https://stats.nextcloud.com https://cdn.matomo.cloud; frame-ancestors 'self' https://nextcloud.matomo.cloud
Info::
default-src directive is set
Got: default-src 'none'
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' 'unsafe-eval' data: https://ams.wpml.org https://www.paypal.com/ https://www.paypalobjects.com/ https://dataguard.azureedge.net https://stats.nextcloud.com/ https://cdn.matomo.cloud https://*.stripe.com https://nextcloud.matomo.cloud https://ajax.googleapis.com/ https://www.youtube.com
Critical::
'unsafe-eval' found in script source
'unsafe-eval' allows eval() and similar functions, enabling code injection. Remove it.
Got: script-src 'self' 'unsafe-inline' 'unsafe-eval' data: https://ams.wpml.org https://www.paypal.com/ https://www.paypalobjects.com/ https://dataguard.azureedge.net https://stats.nextcloud.com/ https://cdn.matomo.cloud https://*.stripe.com https://nextcloud.matomo.cloud https://ajax.googleapis.com/ https://www.youtube.com
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://nextcloud.matomo.cloud
Warning::
form-action directive is missing
form-action restricts where forms can submit data, preventing form hijacking.
Expected: form-action 'self'
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

'unsafe-eval' allows eval() and similar functions, enabling code injection. Remove it.

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

form-action restricts where forms can submit data, preventing form hijacking.

Expected: form-action 'self'
Why this matters

Security gaps expose your site and users to attacks, eroding trust.

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

default-src 'none'
script-src 'self''unsafe-inline''unsafe-eval'data:https://ams.wpml.orghttps://www.paypal.com/https://www.paypalobjects.com/https://dataguard.azureedge.nethttps://stats.nextcloud.com/https://cdn.matomo.cloudhttps://*.stripe.comhttps://nextcloud.matomo.cloudhttps://ajax.googleapis.com/https://www.youtube.com
connect-src 'self'https://www.paypal.comhttps://*.stripe.comhttps://dataguard.azureedge.nethttps://my.dataguard.dehttps://stats.nextcloud.com/https://*.wpml.orghttps://cdn.matomo.cloudhttps://nextcloud.matomo.cloudhttps://ipinfo.io/json
img-src 'self'data:*.openstreetmap.orghttps://www.paypalobjects.comhttps://t.paypal.com/https://dataguard.azureedge.nethttps://*.nextcloud.comhttps://*.w.orghttps://secure.gravatar.comhttps://i.ytimg.comhttps://i.vimeocdn.comhttps://nextcloud.matomo.cloud
style-src 'unsafe-inline''self'https://dataguard.azureedge.nethttps://*.wpml.orghttps://nextcloud.matomo.cloud
font-src 'self'data:https://nextcloud.matomo.cloud
media-src 'self'https://www.youtube.comhttps://download.nextcloud.com
frame-src 'self'blob:https://www.paypal.comhttps://www.youtube.comhttps://www.youtube-nocookie.comhttps://player.vimeo.comhttps://*.nextcloud.comhttps://*.stripe.comhttps://www.openstreetmap.orghttps://nextcloud.matomo.cloud
worker-src 'self'blob:https://stats.nextcloud.comhttps://cdn.matomo.cloud
frame-ancestors 'self'https://nextcloud.matomo.cloud
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

C
Security Headers
Action
6 of 10 headers properly configured
REVIEW
6 of 10 headers properly configured
Info::
Strict-Transport-Security is properly configured
Got: max-age=63072000; includeSubDomains; preload
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
Info::
Referrer-Policy is properly configured
Got: same-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: default-src 'none'; script-src 'self' 'unsafe-inline' 'unsafe-eval' data: https:…
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: Apache

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 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

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
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 52 days)
Got: 2026-06-13T01:03:43Z
Info::
Certificate chain has 2 certificates
Info::
Certificate uses modern signature algorithm
Got: ECDSA-SHA384
Info::
Certificate covers 2 domain(s)
Got: nextcloud.com, www.nextcloud.com
Info::
Certificate is issued by a trusted CA
Got: CN=E7,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=nextcloud.comIssuer CN=E7,O=Let's Encrypt,C=USValid 2026-03-15T01:03:44Z → 2026-06-13T01:03:43ZExpires in 52 days SANs nextcloud.com, www.nextcloud.comSignature ECDSA-SHA384Serial 6513ec0ccf32bff68ab9e41aedaa57251b3
Intermediate (CA Certificate)
Subject CN=E7,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 325 days Signature SHA256-RSASerial aa75f1e62b8f0a220966d38bbfd4baa1
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+
Subresource Integrity
No external resources
PASS
No external resources
Info::
No external resources to protect
SRI Coverage No external resources — SRI not applicable
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
A
Email Security
DMARC: quarantine
PASS
DMARC: quarantine
Info::
DMARC policy is quarantine — good protection
DMARC
Policy quarantine — good protection Record v=DMARC1; p=quarantine; pct=100; rua=mailto:re+nqv68gukwwe@dmarc.postmarkapp.com; adkim=r; aspf=r;
A
Transport Security
HTTP/3, HSTS, and TLS version analysis
PASS
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.
Info::
HSTS enabled (includeSubDomains, preload)
Info::
HSTS preload enabled
Info::
TLS 1.3 in use (fastest handshake, 1-RTT)
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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