9.9

CVE-2026-44774

Exploit

Traefik: Gateway API TraefikService backend accepts rest@internal, allowing unauthorized exposure of the REST provider despite providers.rest.insecure=false

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Traefik ≫ Traefik Version < 2.11.46
Traefik ≫ Traefik Version >= 3.0.0 < 3.6.17
Traefik ≫ Traefik Version >= 3.7.0 < 3.7.1
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.46% 0.363
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 9.9 3.1 6
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
security-advisories@github.com 6.4 0 0
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
0b0ca135-0b70-47e7-9f44-1890c2a1c46c 8.3 2.8 5.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H
CWE-15 External Control of System or Configuration Setting

One or more system settings or configuration elements can be externally controlled by a user.

CWE-284 Improper Access Control

The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

https://github.com/traefik/traefik/releases/tag/v2.11.46
Product
Release Notes
https://github.com/traefik/traefik/releases/tag/v3.6.17
Product
Release Notes
https://github.com/traefik/traefik/releases/tag/v3.7.1
Product
Release Notes
https://bugzilla.redhat.com/show_bug.cgi?id=2477937
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44774.json
https://access.redhat.com/errata/RHSA-2026:36820
https://github.com/traefik/traefik/security/advisories/GHSA-96qj-4jj5-wcjc
Patch
Vendor Advisory
Exploit
https://access.redhat.com/security/cve/CVE-2026-44774