CVE-2026-55181: 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…

PriorityP264critical9.4CVSS 3.1

AVNACLPRNUINSUCHIHAL

EPSS

0.60%

46.9th percentile

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.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
quenary	tugtainer	< 1.30.3	1.30.3

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