{"id":"CVE-2026-55494","title":"Tugtainer is a self-hosted app for automating updates of Docker containers","summary":"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 sign…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-284"],"vendor":"Quenary","product":"tugtainer","affected":["tugtainer < 1.30.4"],"published":"2026-09-30","updated":"2026-09-30","sourceUpdated":"2026-09-30T19:57:08.043","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-55494","references":[{"url":"https://github.com/Quenary/tugtainer/commit/0052a5544e187a4d12f771838a8a23ca4afb61cd","label":"security-advisories@github.com"},{"url":"https://github.com/Quenary/tugtainer/releases/tag/v1.30.4","label":"security-advisories@github.com"},{"url":"https://github.com/Quenary/tugtainer/security/advisories/GHSA-wgw2-c96g-p7h7","label":"security-advisories@github.com"},{"url":"https://github.com/Quenary/tugtainer/security/advisories/GHSA-wgw2-c96g-p7h7","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","exploit-available","cve.org"],"exploits":{"github":1,"githubRepos":["https://github.com/4qu4r1um/tugtainer-1.30.2-CVE-2026-55494-and-CVE-2026-62308-to-RCE"],"checkedAt":"2026-10-01T16:13:35.819Z"},"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"total","timestamp":"2026-09-30T17:12:48.476039Z"},"ingestedAt":"2026-09-30T17:13:20.832Z","epss":0.00754,"epssPercentile":0.5339,"slug":"CVE-2026-55494","body":"## Overview\n\nTugtainer 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"abyssal","depthScore":66,"depthScoreParts":{"impact":53.9,"likelihood":0.2,"exploitation":12,"ransomware":0},"changes":[]}