CVE-2026-55494
Tugtainer is a self-hosted app for automating updates of Docker containers
- Risk score
- 84/100
- CVSS
- 9.8 v3.1
- Exploit chance (30 days)
- 0.6%
- Published
- 30 Sep 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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 verific…
- Affected
- See advisory
- Fix
- Upgrade the product to 1.30.4 or later.
- Exploitation
- No known exploitation
Why it is Red
- CVSS 9.8 critical
- Remotely exploitable without logging in
- On your watchlist: docker
References
Original 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.
Last activity 30 Sep 2026. Patch Forecast updates every hour.