Description
stoatchat before 0.15.0 contains a missing authorization vulnerability in the Subscribe message handler that allows authenticated attackers to enumerate members and monitor profile updates of private servers without membership. Attackers can subscribe to any server-s member-update topic by sending a Subscribe message with an arbitrary server ID, receiving live UserUpdate events including display names, avatars, and status changes for members they should not have access to.
CVSS 7.7EPSS 0.258%Risk 0.79
View source- Published
- 2026-08-17 11:16:41
- Affected versions
- <0.15.0
- Type
- Web application
- Last modified
- 2026-08-17 16:17:49
- Vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N