Cross-site Scripting (XSS) Affecting traefik-3 package, versions <3.7.3-r0


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.03% (10th percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-TRAEFIK3-17215764
  • published6 Jun 2026
  • disclosed22 May 2026

Introduced: 22 May 2026

NewCVE-2026-42506  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

Upgrade Minimos:latest traefik-3 to version 3.7.3-r0 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.

Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree. This can be leveraged to execute XSS attacks in applications that attempt to sanitize input HTML before rendering.

CVSS Base Scores

version 3.1