---
id: CVE-2026-59098
title: >-
  LobeChat 2.2.9 - Cross-User Document Disclosure via Unscoped RAG Semantic
  Search
summary: >-
  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-identifi…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-639
vendor: lobehub
product: lobehub
affected:
  - lobehub <= 2.2.9
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-07-06T16:36:44.585430Z'
exploitAvailable: true
published: '2026-07-02'
updated: '2026-11-08'
sourceUpdated: '2026-11-08T14:07:19.592Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-59098'
references:
  - url: 'https://github.com/lobehub/lobehub/issues/16535'
    label: Researcher Disclosure
  - url: 'https://github.com/lobehub/lobehub/pull/16594'
    label: Fix PR
  - url: >-
      https://github.com/lobehub/lobehub/commit/4a7931a4e66832947dba11afdffae2918a56b6a0
    label: Fix Commit
  - url: >-
      https://www.vulncheck.com/advisories/lobechat-cross-user-document-disclosure-via-unscoped-rag-semantic-search
tags:
  - cve.org
  - exploit-available
epss: 0.00415
epssPercentile: 0.36091
ingestedAt: '2026-11-08T14:51:22.285Z'
---

## Overview

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.

## Affected

- `lobehub <= 2.2.9`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.