CVE-2026-52853

What it is

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.

At a glance

Exploitability

Can be exploited over the network with an admin-level account, but needs a user to act. High risk of data exposure.

Exploit odds

0.2% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2026-09-24 19:17 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-10-05 16:17 UTC Last updatedMost recent change to the record

Details

Published

2026-09-24 19:17 UTC

Last modified

2026-10-05 16:17 UTC

Exploit probability

0.2% · EPSS, next 30 days

Weakness

CWE-269 · Improper privilege management

Record status

Deferred

Attack profile CVSS 3.1 · 5.2

Attack vector

Network

Complexity

Low

Privileges needed

High

User interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

Low

Availability

None