CVE-2026-59098
LobeChat 2.2.9 - Cross-User Document Disclosure via Unscoped RAG Semantic Search
- State
- Published
- Severity
- 7.1 High
- Published
- Jul 2, 2026
- Updated
- Jul 14, 2026
- Reserved
- Jul 2, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.1 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 6.5 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N | VulnCheck |
Weaknesses
- CWE-639 Authorization Bypass Through User-Controlled Key
Affected Products
| Product | Versions |
|---|---|
lobehublobehub |
|
References
- Researcher Disclosuretechnical-descriptionexploit
- Fix PRissue-tracking
- Fix Commitpatch
- https://www.vulncheck.com/advisories/lobechat-cross-user-document-disclosure-via-unscoped-rag-semantic-searchthird-party-advisory
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