Docmost is open-source collaborative wiki and documentation software. Prior to 0.80.1, the public avatar and logo image endpoint accepts attacker-controlled fileName path segments and resolves them against local storage without confinement to the intended image directory. An unauthenticated attacker can traverse outside the avatar or logo directory and read local storage objects whose final basename satisfies the route's UUID check.
This issue is fixed in version 0.80.1.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 4
https://github.com/docmost/docmost/commit/a573acedd0317f3472cb0f8b95f6aa1531531…
security-advisories@github.com
https://github.com/docmost/docmost/commit/ec83fc82d54bf3728eaa63b20eb4abcb5aef1…
security-advisories@github.com
https://github.com/docmost/docmost/releases/tag/v0.80.1
security-advisories@github.com
https://github.com/docmost/docmost/security/advisories/GHSA-9f58-29hm-mgp2
security-advisories@github.com