CVE-2020-9343: Signotec Signopad-Api/web

Medium severity, CVSS 6.5. EPSS: 0.9% chance of exploitation in the next 30 days.

An issue was discovered in signotec signoPAD-API/Web (formerly Websocket Pad Server) before 3.1.1 on Windows. It is possible to perform a Denial of Service attack because the implementation doesn't limit the parsing of nested JSON structures. If a victim visits an attacker-controlled website, this vulnerability can be exploited via WebSocket data with a deeply nested JSON array.

Affected products

• Signotec Signopad-Api/web: before 3.1.1 (fixed in 3.1.1)

Published 2020-03-20. Last modified 2026-06-17.