CVE-2026-55494

Impact

Tugtainer is a self-hosted app for automating updates of Docker containers. Prior to version 1.30.4, Tugtainer Agent allows unauthenticated access to Docker management APIs when AGENT_SECRET is not configured. The Agent uses request signatures to protect its API routes. However, in agent/auth.py, the signature verification function returns successfully if Config.AGENT_SECRET is empty. This causes protected Agent APIs to become accessible without authentication. This issue has been patched in version 1.30.4.

Affected packages

This record carries no package version data, so it cannot be matched against a dependency list automatically. Read the advisory and compare your version by hand.

Weakness classification

References

• NVD record
• CVE.org record
• https://github.com/Quenary/tugtainer/commit/0052a5544e187a4d12f771838a8a23ca4afb61cd
• https://github.com/Quenary/tugtainer/releases/tag/v1.30.4
• https://github.com/Quenary/tugtainer/security/advisories/GHSA-wgw2-c96g-p7h7
• https://github.com/Quenary/tugtainer/security/advisories/GHSA-wgw2-c96g-p7h7