CVE-2026-41181

Published: Mag 15, 2026 Last Modified: Mag 19, 2026
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 6,9
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A
MEDIUM 5,8
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: changed
Confidentiality: low
Integrity: none
Availability: none

Description

AI Translation Available

Traefik is an HTTP reverse proxy and load balancer. Prior to 2.11.44, 3.6.15, and 3.7.0-rc.3, there is an information disclosure vulnerability in Traefik's errors (custom error pages) middleware. When the backend returns a response matching the configured status range, the middleware forwards the original request's complete header set, including Authorization, Cookie, and other authentication material, to the separate error page service rather than only the minimal context needed to render the error page. This behavior is undocumented: the documentation states only that Host is forwarded by default, so operators are not warned that sensitive credentials are shared across service boundaries. Deployments using the errors middleware with a distinct error page service may inadvertently expose end-user credentials to infrastructure that was not intended to receive them. This vulnerability is fixed in 2.11.44, 3.6.15, and 3.7.0-rc.3.

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
0,0003
Percentile
0,1th
Updated

EPSS Score Trend (Last 5 Days)

201

Insertion of Sensitive Information Into Sent Data

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Confidentiality
Potential Impacts:
Read Files Or Directories Read Memory Read Application Data
Applicable Platforms
All platforms may be affected
View CWE Details
Application

Traefik by Traefik

Product Information
Vendor Traefik
Product Traefik
Version 3.7.0
cpe:2.3:a:traefik:traefik:3.7.0:rc2:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Traefik by Traefik

Product Information
Vendor Traefik
Product Traefik
Version Range Affected
To 2.11.44 (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 3.6.15 (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/releases/tag/v2.11.44
https://github.com/traefik/traefik/releases/tag/v2.11.44
https://github.com/traefik/traefik/releases/tag/v3.6.15
https://github.com/traefik/traefik/releases/tag/v3.6.15
https://github.com/traefik/traefik/releases/tag/v3.7.0-rc.3
https://github.com/traefik/traefik/releases/tag/v3.7.0-rc.3
https://github.com/traefik/traefik/security/advisories/GHSA…
https://github.com/traefik/traefik/security/advisories/GHSA-p6hg-qh38-555r