CVE-2020-11537: ONLYOFFICE Document Server

Critical severity, CVSS 9.8. EPSS: 1.5% chance of exploitation in the next 30 days.

A SQL Injection issue was discovered in ONLYOFFICE Document Server 5.5.0. An attacker can execute arbitrary SQL queries via injection to DocID parameter of Websocket API.

Affected products

• ONLYOFFICE Document Server: version 5.5.0 only

Published 2020-04-15. Last modified 2026-06-17.