Docmost: Privilege Escalation - ADMIN Can Invite Users as OWNER

Description

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.

Scores

EPSS (exploitation in 30 days)

0.21% · top 89% of all CVEs (5 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.2.

Weakness

• CWE-269: Improper Privilege Management (opens in a new tab)All about CWE-269 and its CVEs

Affected products

• docmost · docmost

  • affected < 0.90.1

References (4)

• https://github.com/docmost/docmost/security/advisories/GHSA-84fx-mvqx-p5gx (opens in a new tab)x_refsource_CONFIRM
• https://github.com/docmost/docmost/pull/2250 (opens in a new tab)x_refsource_MISC
• https://github.com/docmost/docmost/commit/33895b060790358869f54ae451c3848480b39503 (opens in a new tab)x_refsource_MISC
• https://github.com/docmost/docmost/releases/tag/v0.90.1 (opens in a new tab)x_refsource_MISC

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2026-52853](https://trackcve.app/badge/CVE-2026-52853.svg)](https://trackcve.app/cve/CVE-2026-52853)

Record last updated 5 Oct 2026, 15:32 UTC.