CVE-2026-65602

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{"bugzilla": {"description": "traefik: Traefik: Information disclosure and integrity bypass via IngressRouteTCP cross-provider reference", "id": "2506087", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2506087"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.4", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "status": "draft"}, "cwe": "CWE-863", "details": ["A flaw was found in Traefik. A low-privileged Kubernetes user can bypass the crossProviderNamespaces allowlist for IngressRouteTCP service serversTransport references. By setting a forbidden cross-provider reference, Traefik may use a file-provider TCPServersTransport. This can lead to the exposure of privileged backend mTLS client certificates, SPIFFE identity, or PROXY-protocol settings, resulting in information disclosure and potential integrity compromise."], "mitigation": {"lang": "en:us", "value": "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."}, "name": "CVE-2026-65602", "package_state": [{"cpe": "cpe:/a:redhat:openshift_devspaces:3", "fix_state": "Fix deferred", "package_name": "devspaces/traefik-rhel9", "product_name": "Red Hat OpenShift Dev Spaces"}], "public_date": "2026-07-22T11:21:48Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-65602\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-65602\nhttps://github.com/traefik/traefik/commit/26c96a3935cafb473f4a5bae1886560d9aa4e4f0\nhttps://github.com/traefik/traefik/security/advisories/GHSA-42cj-m3vj-89wv\nhttps://www.vulncheck.com/advisories/traefik-before-ingressroutetcp-serverstransport-namespace-bypass"], "statement": "Red Hat OpenShift Dev Spaces ships a version of traefik affected by this vulnerability. The flaw allows a low-privileged Kubernetes user to bypass the crossProviderNamespaces allowlist for IngressRouteTCP service serversTransport references, potentially exposing privileged backend mTLS client certificates or SPIFFE identity. Exploitation requires specific Kubernetes RBAC permissions and a crossProviderNamespaces configuration with cross-provider TCPServersTransport resources.", "threat_severity": "Moderate"}

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