Medium [CVE-2026-54762] Authentication bypass due to invalid authentication secret
This medium-severity Red Hat Linux advisory covers CVE-2026-54762 affecting Red Hat OpenShift Dev Spaces.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
VulniPulse record published Record updated
Summary
Traefik is an HTTP reverse proxy and load balancer. From 3.7.0-ea.1 until 3.7.5, there is a medium severity vulnerability in Traefik's Kubernetes Ingress NGINX provider that causes affected routes to fail open.
When an Ingress explicitly enables BasicAuth or DigestAuth through the supported nginx.ingress.kubernetes.io/auth-type and auth-secret annotations, but the referenced auth Secret cannot be resolved or parsed, Traefik logs the resolution error, skips installing the authentication middleware, and still emits a router to the backend service.
A route that operators intended to protect is therefore published to the data plane without its authentication control, allowing unauthenticated access to the backend. The trigger is an invalid or unresolved auth dependency — a missing, malformed, unreadable, or policy-denied Secret — rather than an intentionally unprotected route.
This vulnerability is fixed in 3.7.5. This allows unauthenticated access to backend services that were intended to be protected, potentially exposing sensitive information or functionality.
Red Hat severity: Low — CVSS 4.4 (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N). Weakness: CWE-166.
Affected Red Hat products: Red Hat OpenShift Dev Spaces. Red Hat does not currently list a fixing RHSA for this CVE.
Is CVE-2026-54762 exploited?
No exploitation is reported in the sources VulniPulse tracks: CVE-2026-54762 is not in the CISA KEV catalog (checked ) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.
How do I fix CVE-2026-54762?
Upgrade to a fixed release named by Red Hat:
- 3.7.5
Confirm against the vendor advisory before you patch.
- 3.7.0
Official advisory · high-confidence parse· fetched 14 days ago·verify at source
Mitigation
Upgrade to a fixed release: 3.7.5. That is the remediation for this advisory.
The vendor advisory may list interim mitigations or workarounds not captured here. Review it before change work.
Official advisory · high-confidence parse· fetched 14 days ago·verify at source
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