CVE-2025-66450

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 v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.3 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/danny-avila/LibreChat/commit/6fa94d3eb8f5779363226d10dccf8b01a735744c	Patch
https://github.com/danny-avila/LibreChat/security/advisories/GHSA-84vx-vmcf-xgpp	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:librechat:librechat:*:*:*:*:*:*:*:*

History

15 Dec 2025, 17:57

Type	Values Removed	Values Added
First Time		Librechat Librechat librechat
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.4
CPE		cpe:2.3:a:librechat:librechat::::::::
References	~~() https://github.com/danny-avila/LibreChat/commit/6fa94d3eb8f5779363226d10dccf8b01a735744c -~~	() https://github.com/danny-avila/LibreChat/commit/6fa94d3eb8f5779363226d10dccf8b01a735744c - Patch
References	~~() https://github.com/danny-avila/LibreChat/security/advisories/GHSA-84vx-vmcf-xgpp -~~	() https://github.com/danny-avila/LibreChat/security/advisories/GHSA-84vx-vmcf-xgpp - Exploit, Vendor Advisory

11 Dec 2025, 22:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-12-11 22:15

Updated : 2025-12-15 17:57

NVD link : CVE-2025-66450

Mitre link : CVE-2025-66450

CVE.ORG link : CVE-2025-66450

JSON object : View

Products Affected

librechat

librechat

CWE

CWE-80

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

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