CVE-2026-74869

HighCVSS 7.7/10Last modified Sep 24, 2026

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.

Metrics

CVSS 3.1 7.7/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Weakness enumeration

CWE-862

Affected software

No affected versions have been published.

Timeline

Published
Aug 17, 2026
Last modified
Sep 24, 2026
NVD status
Deferred

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CVE-2026-74869: High severity, CVSS 7.7 | Vulnix