CVE-2026-55494

9.8 CRITICALpublic exploit available

Published 2026-09-30 · Updated 2026-09-30

AI risk analysis

Summary: The flaw allows unauthenticated access to Docker management APIs due to an empty AGENT_SECRET configuration, enabling unauthorized control over Docker containers.
Exploitability: Exploitation is relatively easy if AGENT_SECRET is not configured, requiring only unauthenticated access to the Agent APIs.
Blast radius: If exploited, attackers could gain full control over Docker containers, leading to potential data loss, system compromise, and service disruption.
Detection: No reliable host or network indicator is derivable from the published description.
Prioritized remediation: Upgrade to Tugtainer version 1.30.4 or later.

auth-bypassdockerapimisconfiguration

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.

NVD 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.

CVSS vector

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

Weaknesses

CWE-284

Public exploit & PoC references

All references

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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