CVE-2026-55494

Published: Sep 30, 2026Modified: Sep 30, 2026Deferred

9.8

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability: 3.9 / Impact: 5.9

Source: security-advisories@github.com (Secondary)

Description

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.

Related CWEs

CWE-284

Improper Access Control

The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

References (4)

https://github.com/Quenary/tugtainer/commit/0052a5544e187a4d12f771838a8a23ca4afb61cd

Source: security-advisories@github.com

https://github.com/Quenary/tugtainer/releases/tag/v1.30.4

Source: security-advisories@github.com

https://github.com/Quenary/tugtainer/security/advisories/GHSA-wgw2-c96g-p7h7

Source: security-advisories@github.com

https://github.com/Quenary/tugtainer/security/advisories/GHSA-wgw2-c96g-p7h7

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

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