Cross-site Scripting (XSS) Affecting langfuse-3 package, versions <3.163.0-r0


Severity

Recommended
0.0
medium
0
10

Snyk's Security Team recommends NVD's CVSS assessment. Learn more

Threat Intelligence

EPSS
0.21% (12th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-CHAINGUARDLATEST-LANGFUSE3-15952011
  • published9 Apr 2026
  • disclosed26 Feb 2026

Introduced: 26 Feb 2026

CVE-2026-27901  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

Upgrade Chainguard langfuse-3 to version 3.163.0-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 Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

Svelte performance oriented web framework. Prior to version 5.53.5, the contents of bind:innerText and bind:textContent on contenteditable elements were not properly escaped. This could enable HTML injection and Cross-Site Scripting (XSS) if rendering untrusted data as the binding's initial value on the server. Version 5.53.5 fixes the issue.

CVSS Base Scores

version 3.1