CVE-2026-34213

Docmost is open-source collaborative wiki and documentation software. Starting in version 0.3.0 and prior to version 0.71.0, improper authorization in Docmost allows a low-privileged authenticated user to overwrite another page's attachment within the same workspace by supplying a victim `attachmentId` to `POST /api/files/upload`. This is a remote integrity issue requiring no victim interaction. Version 0.71.0 contains a patch.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/docmost/docmost/security/advisories/GHSA-89fp-2hch-j9gp	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:docmost:docmost:*:*:*:*:*:*:*:*

History

24 Jul 2026, 22:10

Type	Values Removed	Values Added
Summary		(es) Docmost es un software de wiki y documentación colaborativo de código abierto. A partir de la versión 0.3.0 y antes de la versión 0.71.0, una autorización indebida en Docmost permite a un usuario autenticado con bajos privilegios sobrescribir el adjunto de otra página dentro del mismo espacio de trabajo proporcionando un 'attachmentId' de la víctima a 'POST /API/files/upload'. Este es un problema de integridad remota que no requiere interacción de la víctima. La versión 0.71.0 contiene un parche.

22 Apr 2026, 18:46

Type	Values Removed	Values Added
First Time		Docmost Docmost docmost
CPE		cpe:2.3:a:docmost:docmost::::::::
References	~~() https://github.com/docmost/docmost/security/advisories/GHSA-89fp-2hch-j9gp -~~	() https://github.com/docmost/docmost/security/advisories/GHSA-89fp-2hch-j9gp - Vendor Advisory

14 Apr 2026, 22:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-14 22:16

Updated : 2026-07-24 22:10

NVD link : CVE-2026-34213

Mitre link : CVE-2026-34213

CVE.ORG link : CVE-2026-34213

JSON object : View

Products Affected

docmost

docmost

CWE

CWE-639

Authorization Bypass Through User-Controlled Key

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