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CVE-2025-66201

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Date: November 28, 2025

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.

Severity Score

Related Resources (3)

https://github.com/danny-avila/LibreChat/security/advisories/GHSA-7m2q-fjwr-5x8v
https://nvd.nist.gov/vuln/detail/CVE-2025-66201
https://www.mend.io/vulnerability-database/CVE-2025-66201

Severity Score

Weakness Type (CWE)

Improper Input Validation

CWE-20

Server-Side Request Forgery (SSRF)

CWE-918

Top Fix

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Upgrade Version

Upgrade to version librechat-data-provider - 0.8.100;https://github.com/danny-avila/LibreChat.git - v0.8.1-rc2

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): NONE

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