Detections
Analytics

SCA: security update for github.com/traefik/traefik/v2, github.com/traefik/traefik/v3 (GHSA-wvvq-wgcr-9q48)

high Tenable Cloud Security Plugin ID 439064

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. Versions 2.11.40 and below, 3.0.0-beta1 through
 3.6.11, and 3.7.0-ea.1 are vulnerable to mTLS bypass through the TLS SNI pre-sniffing logic related to
 fragmented ClientHello packets. When a TLS ClientHello is fragmented across multiple records, Traefik's
 SNI extraction may fail with an EOF and return an empty SNI. The TCP router then falls back to the default
 TLS configuration, which does not require client certificates by default. This allows an attacker to
 bypass route-level mTLS enforcement and access services that should require mutual TLS authentication.
 This issue is patched in versions 2.11.41, 3.6.11 and 3.7.0-ea.2. (CVE-2026-32305)

Solution

Update the github.com/traefik/traefik/v2 library and its related packages to version 2.11.41 or later.

See Also

https://github.com/advisories/GHSA-wvvq-wgcr-9q48

Plugin Details

Severity: High

ID: 439064

Version: Revision 1.10

Type: Local

Family: SCA Checks

Published: 3/20/2026

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 1.2

Percentile: 0.01

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2026-32305

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

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

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

CVSS v4

Risk Factor: High

Base Score: 7.8

Threat Score: 7.8

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: 3/20/2026

Vulnerability Publication Date: 3/20/2026

Reference Information

CVE: CVE-2026-32305

cwe: CWE-287