CVE-2026-41174

Published: Apr 30, 2026 Last Modified: Mag 01, 2026
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 4,8
Source: [email protected]
Attack Vector: local
Attack Complexity: low
Privileges Required: low
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A
MEDIUM 6,4
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: changed
Confidentiality: low
Integrity: low
Availability: none

Description

AI Translation Available

Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.43, 3.6.14, and 3.7.0-rc.2, there is a potential vulnerability in Traefik's Kubernetes CRD provider cross-namespace isolation enforcement. When providers.kubernetesCRD.allowCrossNamespace=false, Traefik correctly rejects direct cross-namespace middleware references from IngressRoute objects, but fails to apply the same restriction to middleware references nested inside a Chain middleware's spec.chain.middlewares[]. An actor with permission to create or update Traefik CRDs in their own namespace can exploit this to cause Traefik to resolve and apply middleware objects from another namespace, bypassing the documented isolation boundary. This issue has been patched in versions 2.11.43, 3.6.14, and 3.7.0-rc.2.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0001
Percentile
0,0th
Updated

Single Data Point

Only one EPSS measurement is available for this CVE. Trend analysis requires multiple data points over time.

653

Improper Isolation or Compartmentalization

Draft
Abstraction: Class Structure: Simple
Common Consequences
Security Scopes Affected:
Access Control
Potential Impacts:
Gain Privileges Or Assume Identity Bypass Protection Mechanism
Applicable Platforms
All platforms may be affected
View CWE Details
863

Incorrect Authorization

Incomplete
Abstraction: Class Structure: Simple
Common Consequences
Security Scopes Affected:
Confidentiality Integrity Access Control Availability
Potential Impacts:
Read Application Data Read Files Or Directories Modify Application Data Modify Files Or Directories Gain Privileges Or Assume Identity Bypass Protection Mechanism Execute Unauthorized Code Or Commands Dos: Crash, Exit, Or Restart Dos: Resource Consumption (Cpu) Dos: Resource Consumption (Memory) Dos: Resource Consumption (Other)
Applicable Platforms
Technologies: Database Server, Not Technology-Specific, Web Server
Likelihood of Exploit: High
View CWE Details
Application

Traefik by Traefik

Product Information
Vendor Traefik
Product Traefik
Version Range Affected
To 2.11.43 (exclusive)
cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Traefik by Traefik

Product Information
Vendor Traefik
Product Traefik
Version 3.7.0
cpe:2.3:a:traefik:traefik:3.7.0:ea1:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Traefik by Traefik

Product Information
Vendor Traefik
Product Traefik
Version 3.7.0
cpe:2.3:a:traefik:traefik:3.7.0:rc1:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Traefik by Traefik

Product Information
Vendor Traefik
Product Traefik
Version Range Affected
From 3.0.0 (inclusive)
To 3.6.14 (exclusive)
cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Traefik by Traefik

Product Information
Vendor Traefik
Product Traefik
Version 3.7.0
cpe:2.3:a:traefik:traefik:3.7.0:ea2:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Traefik by Traefik

Product Information
Vendor Traefik
Product Traefik
Version 3.7.0
cpe:2.3:a:traefik:traefik:3.7.0:ea3:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://github.com/traefik/traefik/commit/df00d82fc7f12e071…
https://github.com/traefik/traefik/commit/df00d82fc7f12e07199551832b54de6d0e554…
https://github.com/traefik/traefik/releases/tag/v2.11.43
https://github.com/traefik/traefik/releases/tag/v2.11.43
https://github.com/traefik/traefik/releases/tag/v3.6.14
https://github.com/traefik/traefik/releases/tag/v3.6.14
https://github.com/traefik/traefik/releases/tag/v3.7.0-rc.2
https://github.com/traefik/traefik/releases/tag/v3.7.0-rc.2
https://github.com/traefik/traefik/security/advisories/GHSA…
https://github.com/traefik/traefik/security/advisories/GHSA-xhjw-95fp-8vgq