CVSS 4.0
7.6 highCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:NCVE-2026-71327
High (7.6) in traefik traefik. EPSS 0.5% chance of exploitation in the next 30 days. Fixed in github.com/traefik/traefik/v3 3.6.25, 3.7.10.
Traefik is an open source HTTP reverse proxy and load balancer. From 3.0.0 until 3.6.25 and 3.7.10, Traefik's Kubernetes Gateway API provider in pkg/provider/kubernetes/gateway/httproute.go, grpcroute.go, tcproute.go, and tlsroute.go builds HTTPRoute, GRPCRoute, TCPRoute, and TLSRoute router and service identities by hyphen-concatenating namespace, route name, Gateway identity, entry point, and rule index, allowing colliding Routes to overwrite another namespace's backend. This issue is fixed in 3.6.25 and 3.7.10.
Severity
CVSS 3.1
8.1 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N- EPSS
- 0.5% chance of exploitation in the next 30 days; higher than 41% of CVEs (scores of 2026-10-31)
- CWE
- CWE-694
- Published
- Modified
- Record from
- the NVD, synced
Affected
- traefik:traefik
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-fgjj-px3w-67xx | Go | github.com/traefik/traefik/v3 | >=3.0.0 <3.6.25 | 3.6.25 |
| GHSA-fgjj-px3w-67xx | Go | github.com/traefik/traefik/v3 | >=3.7.0 <3.7.10 | 3.7.10 |
| GO-2026-6209 | Go | github.com/traefik/traefik | all versions | no fix published |
| GO-2026-6209 | Go | github.com/traefik/traefik/v2 | all versions | no fix published |
| GO-2026-6209 | Go | github.com/traefik/traefik/v3 | >=3.0.0 <3.6.25 >=3.7.0 <3.7.10 | 3.6.25, 3.7.10 |
References
- https://github.com/traefik/traefik/commit/a764166656f0cd337f917ac76315c381cca844f9
- https://github.com/traefik/traefik/pull/13580
- https://github.com/traefik/traefik/releases/tag/v3.6.25
- https://github.com/traefik/traefik/releases/tag/v3.7.10
- https://github.com/traefik/traefik/security/advisories/GHSA-fgjj-px3w-67xx