CVE-2026-74869
HighCVSS 7.7Summary
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.
Risk Assessment
The risk includes privacy violation of private server users and unauthorized access to member information, potentially leading to further attacks.
Recommendation
It is recommended to upgrade stoatchat to version 0.15.0 or later, which includes a fix enforcing authorization before subscribing to member-update topics.
Original NVD description (English source)
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.