CVE-2026-52853

Docmost: Privilege Escalation - ADMIN Can Invite Users as OWNER

Published Sep 24, 2026 CVSS 3.1 · 5.2 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Docmost
Docmost docmost
Vendors & Products Docmost
Docmost docmost
Type Values Removed Values Added
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.
Title Docmost: Privilege Escalation - ADMIN Can Invite Users as OWNER
Weaknesses CWE-269
References
Metrics cvssV3_1

{'score': 5.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Oct 5, 2026, 3:32 PM
Reserved
Jun 8, 2026, 6:41 PM
Status
Deferred
Published
Sep 24, 2026, 7:17 PM
Modified
Oct 5, 2026, 4:17 PM