Ghostwire

CVE-2026-54761: Traefik: Kubernetes Gateway crossProviderNamespaces bypass allows HTTPRoute outside the allowlist to expose internal...

MEDIUM CVSS 0.0 Exploit Available

Published: June 17, 2026 | Last Modified: June 17, 2026

Description

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

Ghostwire Analysis — What This Means Practically

Exploit code is reported to be available, increasing the likelihood of active exploitation.

This analysis is generated by Ghostwire from NVD, CISA KEV, EPSS, and open-source intelligence data. Verify findings through primary sources before acting.

References

github.com/traefik/traefik/security/advisories/GHSA-3g6v-2r68-prfc
github.com/traefik/traefik/releases/tag/v3.6.21
github.com/traefik/traefik/releases/tag/v3.7.5
github.com/advisories/GHSA-3g6v-2r68-prfc
www.tenable.com/cve/CVE-2026-54761
www.cnnvd.org.cn/home/globalSearch?keyword=CVE-2026-54761