CVEvulnerability

CVE-2026-71325

4.8 MEDIUM Published 2026-08-06 Modified 2026-09-16 Official page ↗
Status
Analyzed
Published
2026-08-06
Last modified
2026-09-16
Assigner
[email protected]
CVSS 4.0 ([email protected])
4.8 MEDIUM — CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1 ([email protected])
4.4 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Weaknesses
CWE-653, CWE-863

Description

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.

Affected configurations

• traefik traefik (< 2.11.54) • traefik traefik (>= 3.0.0 < 3.6.25) • traefik traefik (>= 3.7.0 <= 3.7.10)

Related

Weakness · CWE (2)

  • CWE-653 Improper Isolation or Compartmentalization weakness
  • CWE-863 Incorrect Authorization weakness

References