Directory Traversal Affecting traefik-3 package, versions <3.6.13-r2


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.05% (15th percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-TRAEFIK3-16102004
  • published18 Apr 2026
  • disclosed21 Apr 2026

Introduced: 18 Apr 2026

NewCVE-2026-40611  (opens in a new tab)
CWE-22  (opens in a new tab)

How to fix?

Upgrade Minimos:latest traefik-3 to version 3.6.13-r2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream traefik-3 package and not the traefik-3 package as distributed by Minimos. See How to fix? for Minimos:latest relevant fixed versions and status.

Let's Encrypt client and ACME library written in Go (Lego). Prior to 4.34.0, the webroot HTTP-01 challenge provider in lego is vulnerable to arbitrary file write and deletion via path traversal. A malicious ACME server can supply a crafted challenge token containing ../ sequences, causing lego to write attacker-influenced content to any path writable by the lego process. This vulnerability is fixed in 4.34.0.