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{"bugzilla": {"description": "traefik: Traefik: Authentication bypass via path traversal in ReplacePathRegex middleware", "id": "2506097", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2506097"}, "csaw": false, "cvss3": {"cvss3_base_score": "10.0", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N", "status": "draft"}, "cwe": "CWE-22", "details": ["A flaw was found in Traefik. An unauthenticated remote attacker can bypass authentication due to a path traversal vulnerability in the ReplacePathRegex middleware. When this middleware is misconfigured, it forwards un-normalized paths, allowing a backend to resolve them to protected routes and grant unauthorized access. This bypass enables access to sensitive administrative interfaces."], "name": "CVE-2026-65600", "package_state": [{"cpe": "cpe:/a:redhat:openshift_devspaces:3", "fix_state": "Affected", "package_name": "devspaces/traefik-rhel9", "product_name": "Red Hat OpenShift Dev Spaces"}], "public_date": "2026-07-22T11:21:46Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-65600\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-65600\nhttps://github.com/traefik/traefik/pull/13466\nhttps://github.com/traefik/traefik/security/advisories/GHSA-cxjq-mrr5-89rv\nhttps://www.vulncheck.com/advisories/traefik-before-authentication-bypass-via-replacepathregex"], "statement": "This Critical flaw in Traefik's `ReplacePathRegex` middleware allows an unauthenticated remote attacker to bypass authentication. When the middleware is configured with a regex that captures user-controlled path segments without a mandatory path separator, it can forward un-normalized paths. This enables access to protected backend routes, including sensitive administrative interfaces, by resolving paths like `/../admin` after normalization. This poses a significant risk to the integrity and confidentiality of services exposed through Traefik in Red Hat OpenShift Dev Spaces deployments.", "threat_severity": "Critical"}

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