CVE-2026-71327
Published:August 06, 2026
Updated:August 31, 2026
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.
Affected Packages
https://github.com/traefik/traefik.git (GITHUB):
Affected version(s) >=v3.0.0 <v3.6.25Fix Suggestion:
Update to version v3.6.25https://github.com/traefik/traefik.git (GITHUB):
Affected version(s) >=v3.7.0 <v3.7.10Fix Suggestion:
Update to version v3.7.10github.com/traefik/traefik/v3 (GO):
Affected version(s) >=v3.7.0 <v3.7.10Fix Suggestion:
Update to version v3.7.10github.com/traefik/traefik/v3 (GO):
Affected version(s) >=v3.0.0 <v3.6.25Fix Suggestion:
Update to version v3.6.25github.com/traefik/traefik/v3 (GO):
Affected version(s) >=v3.7.0 <v3.7.10Fix Suggestion:
Update to version v3.7.10Related Resources (8)
Do you need more information?
Contact UsCVSS v4
Base Score:
7.6
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Use of Multiple Resources with Duplicate Identifier
EPSS
Base Score:
0.36