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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
High
Admin privileges needed
User Interaction
Required
User action required
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 4
https://github.com/docmost/docmost/commit/33895b060790358869f54ae451c3848480b39…
security-advisories@github.com
https://github.com/docmost/docmost/pull/2250
security-advisories@github.com
https://github.com/docmost/docmost/releases/tag/v0.90.1
security-advisories@github.com
https://github.com/docmost/docmost/security/advisories/GHSA-84fx-mvqx-p5gx
security-advisories@github.com