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SCA: security update for github.com/traefik/traefik/v2, github.com/traefik/traefik/v3 (GHSA-92mv-8f8w-wq52)

high Tenable Self-Hosted Container Security Plugin ID 438340

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - Traefik is an HTTP reverse proxy and load balancer. From version 2.11.9 to 2.11.37 and from version 3.1.3
 to 3.6.8, there is a potential vulnerability in Traefik managing the Connection header with X-Forwarded
 headers. When Traefik processes HTTP/1.1 requests, the protection put in place to prevent the removal of
 Traefik-managed X-Forwarded headers (such as X-Real-Ip, X-Forwarded-Host, X-Forwarded-Port, etc.) via the
 Connection header does not handle case sensitivity correctly. The Connection tokens are compared case-
 sensitively against the protected header names, but the actual header deletion operates case-
 insensitively. As a result, a remote unauthenticated client can use lowercase Connection tokens (e.g.
 Connection: x-real-ip) to bypass the protection and trigger the removal of Traefik-managed forwarded
 identity headers. This issue has been patched in versions 2.11.38 and 3.6.9. (CVE-2026-29054)

See Also

https://github.com/advisories/GHSA-92mv-8f8w-wq52

Plugin Details

Severity: High

ID: 438340

Version: Revision 1.9

Type: Local

Family: SCA Checks

Published: 3/5/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 94.16

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:C/A:N

CVSS Score Source: CVE-2026-29054

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 3/4/2026

Vulnerability Publication Date: 3/4/2026

Reference Information

CVE: CVE-2026-29054

cwe: CWE-178