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…
CVE-2025-66450 · Severity: medium · CVSS 5.4 · Published 2025-12-11
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.
No. Junglewise Threat Intelligence has no report of CVE-2025-66450 being exploited in the wild.
How severe is CVE-2025-66450?
Medium severity, with a CVSS score of 5.4, published 11 December 2025.
Which products and versions are affected?
LibreChat. The advisory does not name versions.
Is there a fix for CVE-2025-66450?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2025-66450?
Check whether you run LibreChat. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.