Domain History

verein.ottonia-magdeburg.de

Grade A+ · 91/100 · 4/7 security headers present

Security Score

A+

91/ 100

Security Headers

4/ 7

CSP Violations

NoViolations

Issues Found

7Issues

Recommendations

3Available

Security

91 / 100

Excellent security posture with strong CSP protections in place.

Compliance

66 / 100

Several compliance gaps found in CSP implementation.

Best Practices

55 / 100

Basic practices followed but missing important optimizations.

CSP Analysis

Content Security PolicyMEDIUM

default-src 'self'; img-src 'self' data:; style-src 'self'; script-src 'self'; object-src 'none'; base-uri 'self'; form-action 'self'; frame-ancestors 'self';

Directive Analysis

default-srcLOW

self

img-srcLOW

self data:

•Info: 'data:' URI in img-src

style-srcLOW

self

script-srcMEDIUM

self

•No nonces or hashes used for script-src

object-srcLOW

none

base-uriLOW

self

form-actionLOW

self

frame-ancestorsLOW

self

Missing Directives

⚠MEDIUMMissing MEDIUM directive connect-src (API/XHR control - prevents data exfiltration)

⚠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-PolicyMissing

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

How to add it:

nginx

add_header Referrer-Policy "strict-origin-when-cross-origin" always;

apache

Header always set Referrer-Policy "strict-origin-when-cross-origin"

cloudflare

Rules > Transform Rules > HTTP Response Header Modification > Set Referrer-Policy to "strict-origin-when-cross-origin"

✓Strict-Transport-SecurityPresent

max-age=15768000; includeSubDomains

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

SAMEORIGIN, SAMEORIGIN

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

✓X-XSS-ProtectionPresent

1; mode=block

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

3 recommended security headers are missing on verein.ottonia-magdeburg.de.

Issues Found

•Info: 'data:' URI in img-srcinfo
•Missing MEDIUM directive connect-src (API/XHR control - prevents data exfiltration)medium
•Missing MEDIUM directive font-src (Font source control)medium
•Missing security header: Cross-Origin-Opener-Policymedium
•Missing security header: Permissions-Policymedium
•Missing security header: Referrer-Policymedium
•No nonces or hashes used for script-srcmedium

Recommendations

→Add connect-src directive with appropriate restrictions
→Add font-src directive with appropriate restrictions
→Review and tighten source lists in Content Security Policy

Beyond headers: infrastructure exposure

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