CVE-2026-52853GHSA-84fx-mvqx-p5gx
Docmost: Privilege Escalation - ADMIN Can Invite Users as OWNER
docmost docmost
CVSS
5.2MediumExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.21%Chance of exploitation activity in the next 30 days, higher than 10% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 0.90.1docmostGitHub
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
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.
Text from CVE List
Affected versions 2
- docmostaffected: < 0.90.1CVE List
- docmost<=0.90.0GitHub