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 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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.003 (19.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 19.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Danny-Avila Librechat — versions < 0.8.1-rc2
- Librechat — versions 0.8.1
Weakness classification (CWE)
References
- github.com/danny-avila/LibreChat/security/advisories/GHSA-7m2q-fjwr-5x8v (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.