CVE-2026-73057: Stoatchat

High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days.

stoatchat before 0.15.0 fails to validate SVG viewBox dimensions in the proxy endpoint, allowing attackers to cause denial of service by memory exhaustion. Attackers can host malicious SVGs with extremely large width and height values and trigger concurrent requests to exhaust available memory across proxy replicas.

Affected products

• Stoatchat Stoatchat: before 0.15.0 (fixed in 0.15.0)

Published 2026-08-16. Last modified 2026-09-24.