Traefik: Kubernetes Gateway crossProviderNamespaces bypass allows HTTPRoute outside the allowlist to expose internal Traefik services

Publishers link these advisories through the identifiers shown below. A shared identifier or date alone does not tell you whether your software is affected or whether the advisories describe the same cause.

CVE-2026-54761 · CVE overview and exploitation status

EUVD-2026-38577

GHSA-3g6v-2r68-prfc

GO-2026-5083

cve-program · CVE-2026-54761

• https://github.com/traefik/traefik/security/advisories/GHSA-3g6v-2r68-prfc
• https://github.com/traefik/traefik/releases/tag/v3.6.21
• https://github.com/traefik/traefik/releases/tag/v3.7.5

euvd · EUVD-2026-38577

• https://github.com/traefik/traefik/security/advisories/GHSA-3g6v-2r68-prfc
• https://github.com/traefik/traefik/releases/tag/v3.6.21
• https://github.com/traefik/traefik/releases/tag/v3.7.5

nvd · CVE-2026-54761

• https://github.com/traefik/traefik/releases/tag/v3.6.21
• https://github.com/traefik/traefik/releases/tag/v3.7.5
• https://github.com/traefik/traefik/security/advisories/GHSA-3g6v-2r68-prfc

osv · GHSA-3g6v-2r68-prfc

• https://github.com/traefik/traefik/security/advisories/GHSA-3g6v-2r68-prfc
• https://nvd.nist.gov/vuln/detail/CVE-2026-54761
• https://github.com/traefik/traefik
• https://github.com/traefik/traefik/releases/tag/v3.6.21
• https://github.com/traefik/traefik/releases/tag/v3.7.5

osv · GO-2026-5083

• https://github.com/traefik/traefik/security/advisories/GHSA-3g6v-2r68-prfc
• https://github.com/traefik/traefik/releases/tag/v3.6.21
• https://github.com/traefik/traefik/releases/tag/v3.7.5

No related changes are available here.