CVE-2026-44774
Traefik: Gateway API TraefikService backend accepts rest@internal, allowing unauthorized exposure of the REST provider despite providers.rest.insecure=false
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.
INFO
Published Date :
May 15, 2026, 5:16 p.m.
Last Modified :
Nov. 11, 2026, 8:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-44774
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | CRITICAL | [email protected] | ||||
| CVSS 3.1 | HIGH | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Update Traefik to 2.11.46 or later.
- Update Traefik to 3.6.17 or later.
- Update Traefik to 3.7.1 or later.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-44774.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-44774 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-44774
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-44774 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-44774 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Nov. 11, 2026
Action Type Old Value New Value Added Translation Title: Traefik, Description: Traefik es un proxy inverso HTTP y un equilibrador de carga. Antes de 2.11.46, 3.6.17 y 3.7.1, el proveedor de la API de Gateway de Kubernetes de Traefik permite a un inquilino con permisos de creación de HTTPRoute exponer el gestor del proveedor REST, eludiendo la configuración providers.rest.insecure=false. El proveedor de Gateway acepta cualquier referencia de backend de TraefikService cuyo nombre termine en @internal, haciendo posible enrutar tráfico a rest@internal además de la API@internal prevista. En despliegues de Gateway compartidos donde el proveedor REST está habilitado, esto permite a un actor con bajos privilegios obtener acceso de escritura a la configuración dinámica en vivo de Traefik, permitiendo la reconfiguración no autorizada de enrutadores y servicios. Esta vulnerabilidad está corregida en 2.11.46, 3.6.17 y 3.7.1. -
CVE Modified by 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Jul. 15, 2026
Action Type Old Value New Value Changed Affected [{'cpes': ['cpe:/a:redhat:openshift_devspaces:3.29::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenShift Dev Spaces 3.29', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:openshift_gitops:1'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenShift GitOps', 'defaultStatus': 'unaffected'}] [{'cpes': ['cpe:/a:redhat:openshift_devspaces:3.29::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenShift Dev Spaces 3.29', 'versions': [{'status': 'unaffected', 'version': '1782403274', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'devspaces/traefik-rhel9', 'collectionURL': 'https://catalog.redhat.com/software/containers/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:openshift_gitops:1'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenShift GitOps', 'packageName': 'openshift-gitops-1/argo-rollouts-rhel8', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/a:redhat:openshift_gitops:1'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenShift GitOps', 'packageName': 'openshift-gitops-1/argo-rollouts-rhel9', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'unaffected'}] -
CVE Modified by 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Jul. 09, 2026
Action Type Old Value New Value Added Reference https://access.redhat.com/errata/RHSA-2026:36820 Changed Affected [{'cpes': ['cpe:/a:redhat:openshift_devspaces:3'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenShift Dev Spaces', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:openshift_gitops:1'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenShift GitOps', 'defaultStatus': 'unaffected'}] [{'cpes': ['cpe:/a:redhat:openshift_devspaces:3.29::el9'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenShift Dev Spaces 3.29', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:openshift_gitops:1'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenShift GitOps', 'defaultStatus': 'unaffected'}] -
CVE Modified by 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Jun. 30, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:/a:redhat:openshift_devspaces:3'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenShift Dev Spaces', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:openshift_gitops:1'], 'vendor': 'Red Hat', 'product': 'Red Hat OpenShift GitOps', 'defaultStatus': 'unaffected'}] Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H Added CWE CWE-15 Added Reference https://access.redhat.com/security/cve/CVE-2026-44774 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=2477937 Added Reference https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44774.json -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-44774', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-05-16T01:12:38.060089Z'} -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'traefik', 'product': 'traefik', 'versions': [{'status': 'affected', 'version': '< 2.11.46'}, {'status': 'affected', 'version': '>= 3.0.0-beta1, < 3.6.17'}, {'status': 'affected', 'version': '>= 3.7.0-rc.0, < 3.7.1'}]}] -
Initial Analysis by [email protected]
May. 19, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H Added CPE Configuration OR *cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:* versions up to (excluding) 2.11.46 *cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:* versions from (including) 3.0.0 up to (excluding) 3.6.17 *cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:* versions from (including) 3.7.0 up to (excluding) 3.7.1 Added Reference Type GitHub, Inc.: https://github.com/traefik/traefik/releases/tag/v2.11.46 Types: Product, Release Notes Added Reference Type GitHub, Inc.: https://github.com/traefik/traefik/releases/tag/v3.6.17 Types: Product, Release Notes Added Reference Type GitHub, Inc.: https://github.com/traefik/traefik/releases/tag/v3.7.1 Types: Product, Release Notes Added Reference Type GitHub, Inc.: https://github.com/traefik/traefik/security/advisories/GHSA-96qj-4jj5-wcjc Types: Exploit, Patch, Vendor Advisory -
New CVE Received by [email protected]
May. 15, 2026
Action Type Old Value New Value Added 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. Added CVSS V4.0 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 Added CWE CWE-284 Added Reference https://github.com/traefik/traefik/releases/tag/v2.11.46 Added Reference https://github.com/traefik/traefik/releases/tag/v3.6.17 Added Reference https://github.com/traefik/traefik/releases/tag/v3.7.1 Added Reference https://github.com/traefik/traefik/security/advisories/GHSA-96qj-4jj5-wcjc