CVE-2026-54761
Traefik: Kubernetes Gateway crossProviderNamespaces bypass allows HTTPRoute outside the allowlist to expose internal Traefik services in github.com/traefik/traefik
7.1
HIGH
CVSS 3.1
EPSS 0.32%
Description
Traefik: Kubernetes Gateway crossProviderNamespaces bypass allows HTTPRoute outside the allowlist to expose internal Traefik services in github.com/traefik/traefik
How to fix CVE-2026-54761
To remediate CVE-2026-54761, upgrade the affected package to a fixed version below.
- —no fix listed
- —no fix listed
- —upgrade to 3.6.21 or later
Is CVE-2026-54761 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, <= 1.7.34
- from 0, <= 2.11.50
- from 0, < 3.6.21
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | HIGH7.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N |