Improper Authentication Affecting traefik-2 package, versions *


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.02% (6th percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-TRAEFIK2-15763753
  • published26 Mar 2026
  • disclosed20 Mar 2026

Introduced: 20 Mar 2026

CVE-2026-32305  (opens in a new tab)
CWE-287  (opens in a new tab)
CWE-1188  (opens in a new tab)

How to fix?

There is no fixed version for Minimos:latest traefik-2.

NVD Description

Note: Versions mentioned in the description apply only to the upstream traefik-2 package and not the traefik-2 package as distributed by Minimos. See How to fix? for Minimos:latest relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1