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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/lobehub/lobehub/commit/4a7931a4e66832947dba11afdffae2918a56b6a0
https://github.com/lobehub/lobehub/issues/16535
https://github.com/lobehub/lobehub/pull/16594
https://www.vulncheck.com/advisories/lobechat-cross-user-document-disclosure-via-unscoped-rag-semantic-search

Configurations

No configuration.

History

No history.

Information

Published : 2026-07-02 20:17

Updated : 2026-07-14 23:17

NVD link : CVE-2026-59098

Mitre link : CVE-2026-59098

CVE.ORG link : CVE-2026-59098

JSON object : View

Products Affected

No product.

CWE

CWE-639

Authorization Bypass Through User-Controlled Key

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