CVE-2026-54024

Description

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.

Traduire en français

Produits concernés

• danny-avila LibreChat
• Librechat librechat

Scores CVSS

Faiblesses (CWE)

• CWE-770

Références

• https://github.com/danny-avila/LibreChat/security/advisories/GHSA-52f6-fqwv-jccf ExploitVendor Advisory
• https://github.com/danny-avila/LibreChat/security/advisories/GHSA-52f6-fqwv-jccf ExploitVendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories