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Highest advisory severityCritical 1 vendor · 1 advisory

CVE-2026-48020

CVE-2026-48020: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

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Vendor advisory comparison

Red Hat

1 advisory
  • Advisory severityCritical9.1

    Critical [CVE-2026-48020] Authentication bypass in StripPrefix middleware allows unauthorized access to protected paths

    CVE-2026-48020Source published Source updated

    Traefik is an HTTP reverse proxy and load balancer. Prior to 2.11.48, 3.6.19, and 3.7.3, there is a high severity vulnerability in Traefik's StripPrefix middleware that allows an unauthenticated attacker to bypass route-level authentication and authorization. When a public router matches on a PathPrefix rule and applies the StripPrefix middleware, a request path containing.. or its percent-encoded form %2e%2e can match the public route at routing time and then, after the prefix is stripped and the path is normalized, resolve to a path served by a separate, authenticated router. As a result, an attacker can reach protected backend paths — such as admin or internal configuration endpoints — without satisfying the authentication middleware attached to the protected router. This…

    Affected products in this advisory
    • Red Hat OpenShift Dev Spaces 3.30
    Source-reported affected versions
    • < 2.11.48
    • < 3.6.19
    • < 3.7.3
    Source-reported fixed versions
    • 2.11.48
    • 3.6.19
    • 3.7.3
    • devspaces/traefik-rhel9:1787756799

    1 more entries in the full advisory.

    Mitigation guidance
    • Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
    Full advisory and evidenceOpen source bulletin

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