LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, the POST /api/files/images endpoint allows any authenticated user to upload files into any agent's tool_resources (e.g., context, execute_code) without verifying ownership or EDIT permission on the target agent. A permission check was added to the POST /api/files route in a previous patch, but the image upload route was never updated with the same check. An attacker can simply use the image endpoint instead of the file endpoint to bypass the authorization entirely. 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-c55r-p24w-hcj5 Exploit, Vendor Advisory
- https://github.com/danny-avila/LibreChat/security/advisories/GHSA-c55r-p24w-hcj5 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-c55r-p24w-hcj5 Exploit, Vendor Advisory
- https://github.com/danny-avila/LibreChat/security/advisories/GHSA-c55r-p24w-hcj5 Exploit, Vendor Advisory