Vulnerability Description
LobeChat is an open source chat application platform. Prior to version 2.0.0-next.193, `knowledgeBase.removeFilesFromKnowledgeBase` tRPC ep allows authenticated users to delete files from any knowledge base without verifying ownership. `userId` filter in the database query is commented out, so it's enabling attackers to delete other users' KB files if they know the knowledge base ID and file ID. While the vulnerability is confirmed, practical exploitation requires knowing target's KB ID and target's file ID. These IDs are random and not easily enumerable. However, IDs may leak through shared links, logs, referrer headers and so on. Missing authorization check is a critical security flaw regardless. Users should upgrade to version 2.0.0-next.193 to receive a patch.
CVSS Score
LOW
Related Weaknesses (CWE)
References
- https://github.com/lobehub/lobe-chat/commit/2c1762b85acb84467ed5e799afe1499cd2f9
- https://github.com/lobehub/lobe-chat/security/advisories/GHSA-j7xp-4mg9-x28r
FAQ
What is CVE-2026-23522?
CVE-2026-23522 is a vulnerability with a CVSS score of 3.7 (LOW). LobeChat is an open source chat application platform. Prior to version 2.0.0-next.193, `knowledgeBase.removeFilesFromKnowledgeBase` tRPC ep allows authenticated users to delete files from any knowledg...
How severe is CVE-2026-23522?
CVE-2026-23522 has been rated LOW with a CVSS base score of 3.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-23522?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.