---
cve: "CVE-2026-52850"
severity: "MEDIUM"
cvss: 4.3
epss: "4.2%"
vendor: "docmost"
kev: false
exploited: false
published: "2026-09-24 19:17:13"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-27T02:39:39+02:00"
---

# CVE-2026-52850

> 4.3 MEDIUM · 🧪 PoC

## Beschreibung

Docmost is open-source collaborative wiki and documentation software. Prior to 0.90.1, an authenticated workspace member who does not belong to a private space can call the transclusion / sync-block lookup API with a known sourcePageId and transclusionId pair because the lookup does not enforce private space membership before resolving the source page. The API can return confidential sync-block content and source page metadata even though the normal page APIs deny access to the same page. This issue is fixed in version 0.90.1.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Gering | warn |
| I Integrität | Keine | good |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- 830b5b4d458a1302f42c8b68bff9ff559f6eb342 (Commit)
- ef04c22aeadfb82103f1e8c13a746d352e68a5f7 (Commit)

## Referenzen

- <https://github.com/docmost/docmost/security/advisories/GHSA-5vhf-cgf2-c9cq>
- <https://github.com/docmost/docmost/commit/830b5b4d458a1302f42c8b68bff9ff559f6eb342>
- <https://github.com/docmost/docmost/releases/tag/v0.90.1>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-52850) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_