CVE-2025-66450

HIGH EPSS 7.1%
Published Dec 11, 20256mo ago · Modified Jun 17, 20262w ago
8.6 CVSS 4.0
High
Find Similar
Published Dec 11, 2025 6mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
8.6
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction P
Scope X

Threat Intelligence

EPSS Exploit Probability
7.1% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-80

Affected Products 1

VendorProductVersionRange
librechatlibrechat* <0.8.1

References 2

  • github.com https://github.com/danny-avila/LibreChat/commit/6fa94d3eb8f5779363226d10dccf8b01a735744c
    Patch
  • github.com https://github.com/danny-avila/LibreChat/security/advisories/GHSA-84vx-vmcf-xgpp
    ExploitVendor Advisory

Remediation

  • github.com https://github.com/danny-avila/LibreChat/commit/6fa94d3eb8f5779363226d10dccf8b01a735744c
    Patch