What is CVE-2025-66201?

CVE-2025-66201 is a high-severity vulnerability in Danny-avila Librechat, classified under Improper Input Validation. CVSS score: 8.1/10. Published 2025-11-29.

How severe is CVE-2025-66201?

High severity. CVSS v3 base score is 8.1 out of 10.

SSRF in Danny-avila Librechat

CVE-2025-66201

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 th…

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.003 (17.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

Affected products

Danny-avila Librechat — versions < 0.8.1-rc2
Librechat — versions 0.8.1

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2025-66201?: CVE-2025-66201 is a high-severity vulnerability in Danny-avila Librechat, classified under Improper Input Validation. CVSS score: 8.1/10. Published 2025-11-29.
How severe is CVE-2025-66201?: High severity. CVSS v3 base score is 8.1 out of 10.