---
cve: "CVE-2026-59098"
severity: "HIGH"
cvss: 7.1
epss: "24%"
vendor: "lobehub"
kev: false
exploited: false
published: "2026-07-02 20:17:08"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-17T22:40:54+02:00"
---

# CVE-2026-59098

> 7.1 HIGH · 🧪 PoC

## Beschreibung

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-Vektor

```
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
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |

## Referenzen

- <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>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-59098) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_