CVE-2026-100675: Stoatchat

Medium severity, CVSS 6.5. EPSS: 0.3% chance of exploitation in the next 30 days.

stoatchat versions before 0.15.5 contain a denial of service vulnerability in the acknowledgement worker that processes mass mention messages. Authenticated users can send five crafted role-mention messages to terminate all acknowledgement workers, disabling push notifications and mention badges deployment-wide until the API process restarts.

Affected products

• Stoatchat Stoatchat: before 0.15.5 (fixed in 0.15.5)

Published 2026-09-26. Last modified 2026-09-28.