LibreChat is a ChatGPT clone with additional features. Versions 0.8.2-rc2 through 0.8.2 are vulnerable to a server-side request forgery (SSRF) attack when using agent actions or MCP. Although a previous SSRF vulnerability (https://github.com/danny-avila/LibreChat/security/advisories/GHSA-rgjq-4q58-m3q8) was reported and patched, the fix only introduced hostname validation. It does not verify whether DNS resolution results in a private IP address. As a result, an attacker can still bypass the protection and gain access to internal resources, such as an internal RAG API or cloud instance metadata endpoints. Version 0.8.3-rc1 contains a patch.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/danny-avila/LibreChat/security/advisories/GHSA-f92m-jpv7-55p2 Exploit, Mitigation, Vendor Advisory
- https://github.com/danny-avila/LibreChat/security/advisories/GHSA-f92m-jpv7-55p2 Exploit, Mitigation, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.7 · librechatNVD modified 2026-10-26 21:10
Affected (CPE criteria) 3
cpe:2.3:a:librechat:librechat:0.8.2:-:*:*:*:*:*:*cpe:2.3:a:librechat:librechat:0.8.2:rc2:*:*:*:*:*:*cpe:2.3:a:librechat:librechat:0.8.2:rc3:*:*:*:*:*:*
References 2
- https://github.com/danny-avila/LibreChat/security/advisories/GHSA-f92m-jpv7-55p2 Exploit, Mitigation, Vendor Advisory
- https://github.com/danny-avila/LibreChat/security/advisories/GHSA-f92m-jpv7-55p2 Exploit, Mitigation, Vendor Advisory