Cross-site Scripting (XSS) Affecting librechat package, versions <0.8.1-r0


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.04% (13th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-LIBRECHAT-14459505
  • published17 Dec 2025
  • disclosed11 Dec 2025

Introduced: 11 Dec 2025

CVE-2025-66450  (opens in a new tab)
CWE-80  (opens in a new tab)

How to fix?

Upgrade Chainguard librechat to version 0.8.1-r0 or higher.

NVD Description

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

LibreChat is a ChatGPT clone with additional features. In versions 0.8.0 and below, when a user posts a question, the iconURL parameter of the POST request can be modified by an attacker. The malicious code is then stored in the chat which can then be shared to other users. When sharing chats with a potentially malicious “tracker”, resources loaded can lead to loss of privacy for users who view the chat link that is sent to them. This issue is fixed in version 0.8.1.

CVSS Base Scores

version 3.1