VULNERABILITY INTELLIGENCE
CVE-2026-74869
CVSS score7.7 HIGH
EPSS probability0.35%
CISA KEVNot currently listed
Published2026-08-17
Last modified2026-09-24
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
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.
Weakness classification
- disclosure@vulncheck.com: CWE-862