---
id: CVE-2026-52853
title: Docmost is open-source collaborative wiki and documentation software
summary: >-
  Docmost is open-source collaborative wiki and documentation software. Prior to
  0.90.1, an authenticated workspace ADMIN can use the workspace invitation flow
  to invite an external email address with the OWNER role because the role
  ceilin…
severity: medium
cvss: 5.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:N'
cwe:
  - CWE-269
vendor: docmost
product: docmost
affected:
  - docmost < 0.90.1
published: '2026-09-24'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T19:17:14.250'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-52853'
references:
  - url: >-
      https://github.com/docmost/docmost/commit/33895b060790358869f54ae451c3848480b39503
    label: security-advisories@github.com
  - url: 'https://github.com/docmost/docmost/pull/2250'
    label: security-advisories@github.com
  - url: 'https://github.com/docmost/docmost/releases/tag/v0.90.1'
    label: security-advisories@github.com
  - url: 'https://github.com/docmost/docmost/security/advisories/GHSA-84fx-mvqx-p5gx'
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-24T18:49:36.716Z'
---

## Overview

Docmost is open-source collaborative wiki and documentation software. Prior to 0.90.1, an authenticated workspace ADMIN can use the workspace invitation flow to invite an external email address with the OWNER role because the role ceiling does not prevent ADMIN users from granting privileges above their own. When the invitation is accepted, the new account receives OWNER-level permissions, allowing the ADMIN to create a backdoor OWNER account or promote a colluding external user to the workspace's highest privilege level. This issue is fixed in version 0.90.1.

## Remediation

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