Domain History

mvzboerde.de

Grade C · 67/100 · 4/7 security headers present

Security Score

67/ 100

Security Headers

4/ 7

CSP Violations

NoViolations

Issues Found

13Issues

Recommendations

8Available

Security

67 / 100

Moderate security gaps found — unsafe directives or weak source restrictions.

Compliance

60 / 100

Several compliance gaps found in CSP implementation.

Best Practices

25 / 100

Best practices largely absent — review CSP configuration.

CSP Analysis

Content Security PolicyMEDIUM

worker-src blob: 'self' ; img-src data: blob: 'self' https://cdn.docmedico.de; connect-src 'self' https://tiles.openfreemap.org; default-src 'self'

Directive Analysis

worker-srcMEDIUM

blob: self

•Info: 'blob:' URI in worker-src

•RISK: 'blob:' in worker-src allows creation of workers from dynamic blob content

img-srcLOW

data: blob: self https://cdn.docmedico.de

•Info: 'data:' URI in img-src

•Info: 'blob:' URI in img-src

connect-srcLOW

self https://tiles.openfreemap.org

default-srcLOW

self

Missing Directives

⚠CRITICALMissing CRITICAL directive script-src (JavaScript source control)

⚠HIGHMissing HIGH directive object-src (Plugin control - should be 'none')

⚠HIGHMissing HIGH directive base-uri (Base URI control - prevents base tag injection)

⚠HIGHMissing HIGH directive frame-ancestors (Framing control - prevents clickjacking)

⚠MEDIUMMissing MEDIUM directive form-action (Form submission control - prevents form hijacking)

⚠MEDIUMMissing MEDIUM directive style-src (Stylesheet source control)

⚠MEDIUMMissing MEDIUM directive font-src (Font source control)

Security Headers

✗Cross-Origin-Opener-PolicyMissing

Isolates the browsing context to prevent Spectre-type side-channel attacks and cross-origin window manipulation.

How to add it:

nginx

add_header Cross-Origin-Opener-Policy "same-origin" always;

apache

Header always set Cross-Origin-Opener-Policy "same-origin"

cloudflare

Rules > Transform Rules > HTTP Response Header Modification > Set Cross-Origin-Opener-Policy to "same-origin"

✗Permissions-PolicyMissing

Restricts which browser features (camera, microphone, geolocation) the page can use, limiting attack surface.

How to add it:

nginx

add_header Permissions-Policy "camera=(), microphone=(), geolocation=()" always;

apache

Header always set Permissions-Policy "camera=(), microphone=(), geolocation=()"

cloudflare

Rules > Transform Rules > HTTP Response Header Modification > Set Permissions-Policy value

✓Referrer-PolicyPresent

same-origin, strict-origin-when-cross-origin

Controls how much referrer information is sent with requests, preventing data leaks to third parties.

✓Strict-Transport-SecurityPresent

max-age=31536000

Forces browsers to use HTTPS for all future requests, preventing man-in-the-middle attacks and SSL stripping.

✓X-Content-Type-OptionsPresent

nosniff

Prevents browsers from MIME-sniffing responses away from the declared Content-Type, blocking drive-by downloads.

✓X-Frame-OptionsPresent

DENY

Prevents the page from being embedded in iframes, protecting against clickjacking attacks.

—X-XSS-ProtectionDeprecated

Legacy XSS filter for older browsers. Modern browsers use CSP instead. Set to "0" to avoid false positives.

2 recommended security headers are missing on mvzboerde.de.

Issues Found

•Info: 'blob:' URI in img-srcinfo
•Info: 'blob:' URI in worker-srcinfo
•Info: 'data:' URI in img-srcinfo
•Missing CRITICAL directive script-src (JavaScript source control)critical
•Missing HIGH directive base-uri (Base URI control - prevents base tag injection)high
•Missing HIGH directive frame-ancestors (Framing control - prevents clickjacking)high
•Missing HIGH directive object-src (Plugin control - should be 'none')high
•Missing MEDIUM directive font-src (Font source control)medium
•Missing MEDIUM directive form-action (Form submission control - prevents form hijacking)medium
•Missing MEDIUM directive style-src (Stylesheet source control)medium
•Missing security header: Cross-Origin-Opener-Policymedium
•Missing security header: Permissions-Policymedium
•RISK: 'blob:' in worker-src allows creation of workers from dynamic blob contentmedium

Recommendations

→Add base-uri directive with appropriate restrictions
→Add font-src directive with appropriate restrictions
→Add form-action directive with appropriate restrictions
→Add frame-ancestors directive with appropriate restrictions
→Add object-src directive with appropriate restrictions
→Add script-src directive with appropriate restrictions
→Add style-src directive with appropriate restrictions
→Review and tighten source lists in Content Security Policy

Beyond headers: infrastructure exposure

via OSN, our sister project

Security headers protect the browser. OSN maps what's exposed underneath — servers, open ports, known CVEs, DNS and WHOIS.

See what the internet sees about mvzboerde.de

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mvzboerde.de

1 scan since 10/30/2026

Latest: 67/100

Total Scans

Latest Score

67/100

First Scan

10/30/2026

Last Scan

10/30/2026

Security

67 / 100

Moderate security gaps found — unsafe directives or weak source restrictions.

Compliance

60 / 100

Several compliance gaps found in CSP implementation.

Best Practices

25 / 100

Best practices largely absent — review CSP configuration.

Scan History

Date	Score	CSP	Headers	Issues	Action
Oct 30, 2026	C (67)	Yes	4/7	13	View →

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HeaderTest security grade: C (67/100) for mvzboerde.de

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