CVE-2026-44774
MEDIUM EPSS 35.4%
Published May 15, 20261mo ago · Modified Jun 17, 20261w ago
6.4 CVSS 4.0
Published May 15, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago
Description
Traefik is an HTTP reverse proxy and load balancer. Prior to 2.11.46, 3.6.17, and 3.7.1, Traefik's Kubernetes Gateway API provider allows a tenant with HTTPRoute creation permissions to expose the REST provider handler, bypassing the providers.rest.insecure=false setting. The Gateway provider accepts any TraefikService backend reference whose name ends with @internal, making it possible to route traffic to rest@internal in addition to the intended api@internal. In shared Gateway deployments where the REST provider is enabled, this allows a low-privileged actor to gain live dynamic configuration write access to Traefik, enabling unauthorized reconfiguration of routers and services. This vulnerability is fixed in 2.11.46, 3.6.17, and 3.7.1.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:H/SA:H/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 Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
35.4% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available
Weaknesses 1
CWE-284
Affected Products 3
References 4
- github.com https://github.com/traefik/traefik/releases/tag/v2.11.46
- github.com https://github.com/traefik/traefik/releases/tag/v3.6.17
- github.com https://github.com/traefik/traefik/releases/tag/v3.7.1
- github.com https://github.com/traefik/traefik/security/advisories/GHSA-96qj-4jj5-wcjc
Remediation
- github.com https://github.com/traefik/traefik/security/advisories/GHSA-96qj-4jj5-wcjc