Riskcovery

CVE-2026-23522

Lobe Chat has IDOR in Knowledge Base File Removal that Allows Cross User File Deletion

State
Published
Severity
3.7 Low
Published
Jan 19, 2026
Updated
Jan 20, 2026
Reserved
Jan 13, 2026

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.13.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:NGitHub_M

Weaknesses

  • CWE-284 Improper Access Control
  • CWE-639 Authorization Bypass Through User-Controlled Key
  • CWE-862 Missing Authorization
  • CWE-915 Improperly Controlled Modification of Dynamically-Determined Object Attributes

Affected Products

ProductVersions
lobe-chatlobehub
  • < 2.0.0-next.193Affected

References

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