CVE-2026-55494
Tugtainer: Unauthenticated access to Tugtainer Agent Docker management APIs when AGENT_SECRET is unset
CVSS Score
9.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-284 |
| Vendor | quenary |
| Product | tugtainer |
| Published | Sep 30, 2026 |
| Last Updated | Sep 30, 2026 |
Stay Ahead of the Next One
Get instant alerts for quenary tugtainer
Be the first to know when new critical vulnerabilities affecting quenary tugtainer are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Quenary / tugtainer
< 1.30.4