CVE-2025-66450

MEDIUM

LibreChat < 0.8.1 - Stored Cross-Site Scripting via IconURL Parameter

Title source: llm
STIX 2.1

Description

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.

References (2)

Core 2

Scores

CVSS v3 5.4
EPSS 0.0018
EPSS Percentile 7.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-80
Status published
Products (1)
librechat/librechat < 0.8.1
Published Dec 11, 2025
Tracked Since Feb 18, 2026