CVE-2023-30186: ONLYOFFICE Document Server

Critical severity, CVSS 9.8. EPSS: 2.3% chance of exploitation in the next 30 days.

A use after free issue discovered in ONLYOFFICE DocumentServer 4.0.3 through 7.3.2 allows remote attackers to run arbitrary code via crafted JavaScript file.

Affected products

• ONLYOFFICE Document Server: from 4.0.3, up to and including 7.3.2

Published 2023-08-14. Last modified 2026-07-09.