CVE-2026-59098
LobeChat through 2.2.9 contains a broken access control vulnerability in the retrieval-augmented-generation semantic search functionality that allows authenticated attackers to access other users' data by exploiting missing user-identifier predicates in the chunk model semanticSearch method. Attackers can supply arbitrary victim file or knowledge-base identifiers through the chunk retrieval and chat knowledge-base paths to retrieve text content, file names, and metadata belonging to other users.
- Score
- CVSS 4.0 7.1 High
- Status
- Deferred - disclosure@vulncheck.com
- Published
- 2026-07-02
- Last modified
- 2026-10-25
- Weaknesses
- CWE-639
Affected products
References
- https://github.com/lobehub/lobehub/issues/16535
- https://github.com/lobehub/lobehub/pull/16594
- https://github.com/lobehub/lobehub/commit/4a7931a4e66832947dba11afdffae2918a56b6a0
- https://www.vulncheck.com/advisories/lobechat-cross-user-document-disclosure-via-unscoped-rag-semantic-search
