Detections
Analytics
SCA: security update for github.com/traefik/traefik/v2, github.com/traefik/traefik/v3 (GHSA-x677-9fxg-v5c5)
high Tenable Cloud Security Plugin ID 445737
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. Prior to v2.11.51, v3.6.22, and v3.7.6, Traefik's
BasicAuth, DigestAuth, and ForwardAuth middlewares strip canonical-cased spoofed identity headers before
writing Traefik's own value, but do not account for underscore-variant header names, which many backends
normalize identically to dashed forms. An attacker able to reach a protected route can inject an
underscore-variant header that survives Traefik's stripping and reaches the backend alongside, or on the
unauthenticated ForwardAuth authResponseHeaders path instead of, the value Traefik intended to set,
spoofing identity or authorization context. This issue is fixed in versions v2.11.51, v3.6.22, and v3.7.6.
(CVE-2026-54763)
Solution
Update the github.com/traefik/traefik/v2 library and its related packages to version 2.11.51 or later.See Also
Plugin Details
Severity: High
ID: 445737
Version: Revision 1.1
Type: Local
Family: SCA Checks
Published: 8/6/2026
Updated: 8/6/2026
Risk Information
VPR
Risk Factor: Medium
Score: 4.8
Percentile: 57.78
Vendor
Vendor Severity: High
CVSS v2
Risk Factor: High
Base Score: 9.4
Temporal Score: 7
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N
CVSS Score Source: CVE-2026-54763
CVSS v3
Risk Factor: Critical
Base Score: 10
Temporal Score: 8.7
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
CVSS v4
Risk Factor: High
Base Score: 7.8
Threat Score: 4.7
Threat Vector: CVSS:4.0/E:U
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
Vulnerability Information
Exploit Ease: No known exploits are available
Patch Publication Date: 8/6/2026
Vulnerability Publication Date: 7/4/2026
Reference Information
CVE: CVE-2026-54763