CVE-2026-55181 PUBLISHED

Tugtainer: OIDC login remains accessible when OIDC_ENABLED is false

Assigner: GitHub_M
Reserved: 16.06.2026 Published: 30.09.2026 Updated: 30.09.2026

Tugtainer is a self-hosted app for automating updates of Docker containers. Prior to version 1.30.3, Tugtainer's OIDC authentication can still be initiated even when OIDC_ENABLED=false. The /auth/oidc/enabled endpoint correctly reports that OIDC is disabled. However, a direct request to /auth/oidc/login still starts the OIDC login flow, returns HTTP 302, sets an oidc_state cookie, and redirects the user to the configured OIDC authorization endpoint. This bypasses the intended OIDC disable switch. This issue has been patched in version 1.30.3.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
CVSS Score: 9.4

Product Status

Vendor Quenary
Product tugtainer
Versions
  • Version < 1.30.3 is affected

References

Problem Types

  • CWE-284: Improper Access Control CWE