LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, the fix for CVE-2024-11171 (commit bb58a2d0) added limits: { fileSize } to createMulterInstance() in the file upload routes. However, the POST /api/convos/import endpoint uses a separate multer instance that was never updated with the same limits configuration. Combined with the application-level size check being disabled by default (the CONVERSATION_IMPORT_MAX_FILE_SIZE_BYTES env var is commented out in .env.example), an authenticated user can upload arbitrarily large files to exhaust server disk space and memory. This vulnerability is fixed in 0.8.4-rc1.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/danny-avila/LibreChat/security/advisories/GHSA-52f6-fqwv-jccf Exploit, Vendor Advisory
- https://github.com/danny-avila/LibreChat/security/advisories/GHSA-52f6-fqwv-jccf Exploit, 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 6.5 · librechatNVD modified 2026-10-25 22:10
Affected (CPE criteria) 1
cpe:2.3:a:librechat:librechat:*:*:*:*:*:*:*:*
References 2
- https://github.com/danny-avila/LibreChat/security/advisories/GHSA-52f6-fqwv-jccf Exploit, Vendor Advisory
- https://github.com/danny-avila/LibreChat/security/advisories/GHSA-52f6-fqwv-jccf Exploit, Vendor Advisory