A mass assignment vulnerability exists in danny-avila/librechat, affecting all versions. This vulnerability allows attackers to manipulate sensitive fields by automatically binding user-provided data to internal object properties or database fields without proper filtering. As a result, any extra fields in the request body are included in agentData and passed to the database layer, allowing overwriting of any field in the schema, such as author, access_level, isCollaborative, and projectIds. Additionally, the Object.Prototype can be polluted due to the use of Object.assign with spread operators.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/danny-avila/librechat/commit/a37bf6719cfbc2de270f7d87b6b85d87cc1768db Patch
- https://huntr.com/bounties/32a175c4-7543-4503-a3d0-7880abd1826b Exploit, Patch, Third Party 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 7.5 · librechatNVD modified 2026-10-09 09:10
Affected (CPE criteria) 1
cpe:2.3:a:librechat:librechat:*:*:*:*:*:*:*:*
References 2
- https://github.com/danny-avila/librechat/commit/a37bf6719cfbc2de270f7d87b6b85d87cc1768db Patch
- https://huntr.com/bounties/32a175c4-7543-4503-a3d0-7880abd1826b Exploit, Patch, Third Party Advisory