CVE-2025-66201 HIGH

CVE-2025-66201: LibreChat is Vulnerable to Server-Side Request Forgery (SSRF) in Actions Capability

Vendor Danny-Avila
Product LibreChat
Weakness CWE-20 · Input validation
Published November 29, 2025
Last update December 1, 2025
View on NVD All CVEs

CVSS base score

8.6/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

What the vulnerability does

01Description

LibreChat is a ChatGPT clone with additional features. Prior to version 0.8.1-rc2, LibreChat is vulnerable to Server-side Request Forgery (SSRF), by passing specially crafted OpenAPI specs to its "Actions" feature and making the LLM use those actions. It could be used by an authenticated user with access to this feature to access URLs only accessible to the LibreChat server (such as cloud metadata services, through which impersonation of the server might be possible). This issue has been patched in version 0.8.1-rc2.

Key dates

02Disclosure timeline

November 29, 2025 CVE published
December 1, 2025 Record updated