# BeaverCheck Audit Report — https://fes.de **Date:** April 22, 2026 **URL:** https://fes.de **Overall Grade:** C (76/100) **Report:** https://beavercheck.com/results/bf754374-03dd-47dd-8021-24d4def69e69 ## Top Findings 1. **[CRITICAL]** Content-Security-Policy header is missing — Security > Security Headers 2. **[CRITICAL]** HSTS header is missing — Security > Security Headers 3. **[CRITICAL]** No Content-Security-Policy header found — Security > Content Security Policy 4. **[CRITICAL]** 1 control(s) without accessible label — Accessibility > Form Accessibility 5. **[WARNING]** 31 third-party resources (100% of weight) — Performance > Page Weight Inventory --- ## Lighthouse Scores | Category | Score | |----------|-------| | Performance | 84 | | Accessibility | 100 | | Best Practices | 100 | | SEO | 100 | --- ## Security ### Security Headers (F — 10/100) *2 of 10 headers properly configured* - **[CRITICAL]** HSTS header is missing — Strict-Transport-Security forces browsers to use HTTPS, preventing downgrade attacks. Add the header with a max-age of at least 1 year. - **[WARNING]** X-Content-Type-Options header is missing — This header prevents MIME-type sniffing, which can lead to XSS attacks. Set it to '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. - **[WARNING]** Referrer-Policy header is missing — Controls how much referrer information is sent with requests. Set to 'strict-origin-when-cross-origin' or stricter. - **[WARNING]** Permissions-Policy header is missing — Controls which browser features (camera, microphone, geolocation) are allowed. Set it to restrict unused features. - **[CRITICAL]** Content-Security-Policy header is missing — CSP is the most important header for preventing XSS attacks. See the CSP section for detailed analysis. - **[WARNING]** Cross-Origin-Opener-Policy header is missing — COOP isolates your browsing context, preventing cross-origin side-channel attacks. Set to '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. - **[PASS]** X-Powered-By header is not present - **[PASS]** Server header is present without version info ### Content Security Policy (F — 0/100) *No enforcing CSP policy found* - **[CRITICAL]** No Content-Security-Policy header found — CSP is the most effective defense against XSS attacks. Add a Content-Security-Policy header to restrict resource loading. ### TLS & Certificates (A+ — 100/100) *TLS 1.3, 7 checks passed* - **[PASS]** TLS 1.3 is used - **[PASS]** Strong cipher suite is used - **[INFO]** HTTP/2 is not negotiated — HTTP/2 provides multiplexing and header compression for better performance. - **[PASS]** Certificate is valid (expires in 233 days) - **[PASS]** Certificate chain has 4 certificates - **[PASS]** Certificate uses modern signature algorithm - **[PASS]** Certificate covers 2 domain(s) - **[PASS]** Certificate is issued by a trusted CA ### Cookie Security (A+ — 100/100) *No cookies set — no cookie security risks* - **[PASS]** No cookies set — no cookie security risks --- ## Advanced Security ### Subresource Integrity (A+ — 100/100) *No external resources* - **[PASS]** No external resources to protect ### JS Library Vulnerabilities (A+ — 100/100) *No known vulnerabilities* - **[PASS]** No known JavaScript library vulnerabilities detected ### Information Leakage (A+ — 100/100) *No exposures* - **[INFO]** No security.txt found — Consider adding a security.txt at /.well-known/security.txt. - **[PASS]** No sensitive files exposed ### Email Security (F — 30/100) *No DMARC* - **[WARNING]** No DMARC record found — Without DMARC, email receivers have no policy for handling authentication failures. ### Permissions-Policy (D — 40/100) *No header set* - **[WARNING]** No Permissions-Policy header — Consider adding a Permissions-Policy header to restrict browser feature access from embedded content. ### CORS Configuration (B — 80/100) *No CORS headers* - **[PASS]** No CORS headers present — secure default --- ## Performance ### Page Weight Budget (B — 83/100) *1.1 MB transferred, 32 requests* - **[PASS]** Page weighs 3.1 MB (1.1 MB transferred) - **[PASS]** 32 HTTP requests - **[INFO]** Estimated 0.23 g CO2 per page load ### Third-Party Impact (D — 50/100) *100% third-party, 0 ms blocking* - **[WARNING]** Third-party code accounts for 100% of page weight (1.1 MiB of 1.1 MiB) - **[PASS]** Third-party blocking time is low (0 ms) ### Text Compression (A+ — 100/100) *All text resources are compressed* - **[PASS]** All text resources are compressed ### Image Optimization (B — 75/100) *10 images, 0 KB saveable* - **[PASS]** All images are well-optimized ### JS Execution Cost (F — 20/100) *4590ms total JS execution* - **[WARNING]** https://www.fes.de/_assets/39d34273ab30c098def3e42...: 3776ms CPU time - **[WARNING]** Unattributable: 399ms CPU time - **[WARNING]** https://www.fes.de/: 362ms CPU time - **[INFO]** https://www.fes.de/_assets/e8c90b9983c1cf95dcc0174...: 54ms CPU time - **[WARNING]** Third-party scripts: 4590ms (100% of total) ### Font Loading (A+ — 100/100) *3 fonts (91 KB)* - **[INFO]** 3 font(s) use font-display: swap (FOUT risk but functional) ### JS Bundles (C — 60/100) *7 scripts, 87 KB unused* - **[WARNING]** https://www.fes.de/_assets/39d34273ab30c098def3e42...: 48 KB unused (94%) — Consider code splitting or tree shaking to reduce unused code. - **[WARNING]** https://www.fes.de/_assets/vite/desktop-navigation...: 39 KB unused (81%) — Consider code splitting or tree shaking to reduce unused code. - **[WARNING]** https://www.fes.de/_assets/vite/desktop-navigation...: unminified — 11 KB could be saved - **[WARNING]** https://www.fes.de/_assets/vite/fes-theme.js: unminified — 6 KB could be saved - **[INFO]** Total unused JavaScript: 87 KB ### Resource Caching (A+ — 100/100) *All resources properly cached* - **[PASS]** No caching issues found ### Critical Rendering Path (A+ — 100/100) *No render-blocking resources* - **[PASS]** No render-blocking resources detected ### Resource Hints (A+ — 100/100) *No optimization needed* - **[PASS]** No resource hint issues ### Page Weight Inventory (A — 85/100) *32 resources · 1.1 MB · 87 KB savings available* - **[WARNING]** Page weight 99 KB over 1MB target - **[INFO]** ~87 KB of savings available - **[WARNING]** 31 third-party resources (100% of weight) - **[INFO]** 1 resources over 200KB ### Render-Blocking Resources (A+ — 100/100) *No render-blocking resources detected* - **[PASS]** No render-blocking resources detected in ### Third-Party Resources (A+ — 100/100) *No third-party resources detected* --- ## Content Quality ### Links (F — 40/100) *132 links checked, 67 healthy, 65 broken* - **[CRITICAL]** 67 of 132 links are healthy - **[WARNING]** Broken link: https://fes.de/typo3temp/assets/js/7378d5dc5468da27b323e4... — Found in