CVE-2026-67435: Information Disclosure

Description

linuxfabrik-lib provides Python modules for database access, caching, shell execution, and API integrations. Prior to version 6.0.0, lib.url.fetch() followed cross-origin redirects while forwarding caller-supplied credential headers other than Authorization and Cookie, allowing a malicious redirect-capable server to receive headers such as X-Auth-Token from authenticated monitoring requests. This issue is fixed in version 6.0.0.

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Weakness Type (CWE)

CWE-200 CWE-200

CWE-918 Server-Side Request Forgery (SSRF)

References

Other References

https://github.com/Linuxfabrik/lib/commit/6573ff9347e541200305d278d2663d2e54e052ff https://github.com/Linuxfabrik/lib/releases/tag/v6.0.0 https://github.com/Linuxfabrik/monitoring-plugins/security/advisories/GHSA-4jc5-g844-4x33

Frequently Asked Questions

What is CVE-2026-67435? +

linuxfabrik-lib provides Python modules for database access, caching, shell execution, and API integrations. Prior to version 6.0.0, lib.url.fetch() followed cross-origin redirects while forwarding caller-supplied credential headers other than Authorization and Cookie, allowing a malicious redirect-capable server to receive headers such as X-Auth-Token from authenticated monitoring requests. This issue is fixed in version 6.0.0.

How do I check if I'm vulnerable to CVE-2026-67435? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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