CVE-2026-119572

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{"bugzilla": {"description": "github.com/traefik/traefik: Traefik: Authentication bypass via Ingress TLS configuration conflict", "id": "2564051", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2564051"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.7", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N", "status": "draft"}, "cwe": "CWE-305", "details": ["Traefik from 3.7.0-ea.1 before 3.7.15 contains an authentication bypass vulnerability in the Kubernetes Ingress NGINX provider that silently disables mTLS configured via the auth-tls-secret annotation. When another Ingress declares a path on the same host without matching auth-tls settings, Traefik falls back to default TLS options, letting unauthenticated attackers reach backends requiring client certificates.", "A flaw was found in Traefik. When processing Kubernetes Ingress resources through the NGINX provider, conflicting path definitions on the same host can cause Traefik to silently disable mutual Transport Layer Security (mTLS) authentication. As a result, Traefik falls back to default TLS settings, allowing an unauthenticated remote attacker to access protected backend services that require client certificate authentication."], "name": "CVE-2026-119572", "public_date": "2026-10-30T13:18:11Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-119572\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-119572\nhttps://github.com/traefik/traefik/security/advisories/GHSA-p8wx-ph99-xgcr\nhttps://www.vulncheck.com/advisories/traefik-3.7.0-ea.1-before-3.7.15-mtls-bypass-via-ingress-nginx-provider"], "statement": "This vulnerability is rated Important because an unauthenticated remote attacker can circumvent mutual TLS authentication to access protected backends, although exploitation depends on contradictory ingress path rules on a shared hostname. Traefik is not provided or utilized in Red Hat Enterprise Linux or Red Hat OpenShift, which utilize OpenShift Ingress for cluster traffic routing. Therefore, default Red Hat product deployments are not affected by this flaw.", "threat_severity": "Important"}

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