PT-2025-50771 · Librechat · Librechat

CVE-2025-66450

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Published

2025-12-11

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Updated

2025-12-12

CVSS v4.0

8.6

High

VectorAV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N
Name of the Vulnerable Software and Affected Versions LibreChat versions 0.8.0 and below
Description A flaw exists in LibreChat versions 0.8.0 and below where modification of the iconURL parameter in a POST request allows an attacker to store malicious code within a chat. Sharing this chat with other users can lead to a loss of privacy for those who view the shared link, as resources loaded from the malicious link can compromise user data. The issue is related to cross-site scripting when sharing chat links.
Recommendations Update to version 0.8.1 or later.

Exploit

Fix

XSS

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Weakness Enumeration

Related Identifiers

CVE-2025-66450
GHSA-84VX-VMCF-XGPP

Affected Products

Librechat