Traefik is an open-source edge router that makes publishing services a fun and easy experience. Prior to 2.11.54, 3.6.25, and 3.7.10, cross-namespace @kubernetescrd references are not rejected for TraefikService backend references resolved by the service resolver. A tenant confined by RBAC to a single namespace can therefore bind its own router to a TraefikService owned by another namespace and expose or reroute that namespace's backend, defeating the namespace isolation allowCrossNamespace=false is meant to enforce. This issue is fixed in version 2.11.54, 3.6.25, 3.7.10.
References
| Link | Resource |
|---|---|
| https://github.com/traefik/traefik/commit/65ebf4b47fbdc33e3856803a5844a404e094d52d | Patch |
| https://github.com/traefik/traefik/releases/tag/v2.11.54 | Release Notes |
| https://github.com/traefik/traefik/releases/tag/v3.6.25 | Release Notes |
| https://github.com/traefik/traefik/releases/tag/v3.7.10 | Release Notes |
| https://github.com/traefik/traefik/security/advisories/GHSA-62fc-8686-hfmq | Patch Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
16 Sep 2026, 20:46
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:* | |
| First Time |
Traefik
Traefik traefik |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 4.4 |
| References | () https://github.com/traefik/traefik/commit/65ebf4b47fbdc33e3856803a5844a404e094d52d - Patch | |
| References | () https://github.com/traefik/traefik/releases/tag/v2.11.54 - Release Notes | |
| References | () https://github.com/traefik/traefik/releases/tag/v3.6.25 - Release Notes | |
| References | () https://github.com/traefik/traefik/releases/tag/v3.7.10 - Release Notes | |
| References | () https://github.com/traefik/traefik/security/advisories/GHSA-62fc-8686-hfmq - Patch, Vendor Advisory |
Information
Published : 2026-08-06 22:18
Updated : 2026-09-16 20:46
NVD link : CVE-2026-71325
Mitre link : CVE-2026-71325
CVE.ORG link : CVE-2026-71325
JSON object : View
Products Affected
traefik
- traefik