Is CVE-2026-35051 actively exploited?

CVE-2026-35051 has no public evidence of in-the-wild exploitation as of 2026-04-30.

What is the CVSS score for CVE-2026-35051?

CVE-2026-35051 has a CVSS score of 7.8 (HIGH severity). Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:L/SA:N/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.

How do I patch CVE-2026-35051?

Vendor patch guidance is linked from the references on this page. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-35051.

Which products are affected by CVE-2026-35051?

Affected products for CVE-2026-35051 are listed on this page once vendor data becomes available.

Fix CVE-2026-35051 - HIGH Vulnerability

Description

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 an authentication bypass vulnerability in Traefik's ForwardAuth middleware when trustForwardHeader=false is configured and Traefik is deployed behind a trusted upstream proxy. This issue has been patched in versions 2.11.43, 3.6.14, and 3.7.0-rc.2.

CVSS Metrics

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:L/SA:N/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
Complexity: low
Privileges: none
User Action: none
Confidentiality: undefined
Integrity: undefined
Availability: undefined
Weaknesses: CWE-345

Metadata

Primary Vendor: UNKNOWN
Published: 4/30/2026
Last Modified: 4/30/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2026-35051

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary