Is CVE-2026-74869 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-74869?

CVE-2026-74869 has a CVSS v3 severity of HIGH (7.7).

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CVE-2026-74869

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.