---
id: CVE-2025-66450
title: LibreChat is a ChatGPT clone with additional features
summary: >-
  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
  whi…
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-80
vendor: librechat
product: librechat
affected:
  - librechat < 0.8.1
patched:
  - librechat 0.8.1
published: '2025-12-11'
updated: '2026-10-07'
sourceUpdated: '2026-10-07T20:10:01.970'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-66450'
references:
  - url: >-
      https://github.com/danny-avila/LibreChat/commit/6fa94d3eb8f5779363226d10dccf8b01a735744c
    label: security-advisories@github.com
  - url: >-
      https://github.com/danny-avila/LibreChat/security/advisories/GHSA-84vx-vmcf-xgpp
    label: security-advisories@github.com
tags:
  - nvd
epss: 0.00213
epssPercentile: 0.10572
ingestedAt: '2026-10-07T20:46:46.868Z'
---

## Overview

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.

## Affected

- `librechat < 0.8.1`

## Remediation

Upgrade past the affected range:

- `librechat 0.8.1`