Cross-site Scripting (XSS) Affecting langfuse-3 package, versions <3.188.0-r0


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.37% (30th percentile)

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  • Snyk IDSNYK-WOLFILATEST-LANGFUSE3-17368031
  • published17 Jun 2026
  • disclosed14 Jul 2026

Introduced: 17 Jun 2026

CVE-2026-49459  (opens in a new tab)
CWE-79  (opens in a new tab)
CWE-693  (opens in a new tab)
CWE-1321  (opens in a new tab)

How to fix?

Upgrade Wolfi langfuse-3 to version 3.188.0-r0 or higher.

NVD Description

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

DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. Prior to 3.4.6, DOMPurify.sanitize(root, { IN_PLACE: true }) could preserve event-handler attributes on an attacker-controlled <form> root when a descendant name clobbered properties checked by _isClobbered, because _forceRemove no-opped on the parent-less root and _sanitizeAttributes returned early. This issue is fixed in version 3.4.6.

CVSS Base Scores

version 3.1