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

High 8.6 Published 29 Nov 2025 Updated 1 Dec 2025

Authenticated users can exploit SSRF in LibreChat's Actions feature to access internal server resources and potentially impersonate the server.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-66201?

CVE-2025-66201 is a high-severity server-side request forgery vulnerability in Librechat Librechat, published on 29 Nov 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

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.

Weakness: CWE-918, CWE-20

Which versions are affected by CVE-2025-66201?

It affects 1 product.

Products include Librechat Librechat.

How do I fix CVE-2025-66201?

No fix has been published for CVE-2025-66201 yet. Limit exposure of the affected software until one is available.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2025-66201 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-66201 exists.

All Librechat Librechat vulnerabilities

Sources

Also known as GHSA-7m2q-fjwr-5x8v.