{"id":"GHSA-7m3p-wc52-rmc6","revision":"0352df2d545543319fd5fb04d3e435ed","records":[{"revision":"0352df2d545543319fd5fb04d3e435ed","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GHSA-7m3p-wc52-rmc6","aliases":[],"title":"Duplicate Advisory: Traefik CRD IngressRouteTCP ServersTransport Cross-Provider Namespace Bypass","description":"## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of\u00A0GHSA-42cj-m3vj-89wv. This link is maintained to preserve external references.\n\n## Original Description\nTraefik 3.6.0 through 3.6.22 and 3.7.0 through 3.7.6 fail to enforce the crossProviderNamespaces allowlist for IngressRouteTCP service serversTransport references (the allowlist was only enforced for HTTP serversTransport references). A low-privileged Kubernetes user in a namespace not listed in crossProviderNamespaces can set serversTransport: foo@file on an IngressRouteTCP service, causing Traefik to accept the forbidden cross-provider reference and use a file-provider TCPServersTransport — including privileged backend mTLS client certificates, SPIFFE identity, or PROXY-protocol settings. This is fixed in 3.6.23 and 3.7.7.","state":2,"publishedAt":"2026-07-22T12:32:18+00:00","modifiedAt":"2026-08-05T22:01:01.3158582+00:00","affected":[{"ecosystem":"Go","name":"github.com/traefik/traefik","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"3.6.0"},{"kind":"last_affected","version":"3.6.22"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/traefik/traefik/security/advisories/GHSA-42cj-m3vj-89wv","https://nvd.nist.gov/vuln/detail/CVE-2026-65602","https://github.com/traefik/traefik/commit/26c96a3935cafb473f4a5bae1886560d9aa4e4f0","https://www.vulncheck.com/advisories/traefik-before-ingressroutetcp-serverstransport-namespace-bypass"],"sourceUrl":"https://github.com/advisories/GHSA-7m3p-wc52-rmc6","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-7m3p-wc52-rmc6","identifiers":["GHSA-7m3p-wc52-rmc6"]},"retained":false,"historicalAffected":[]}],"coverage":[]}