ONLYOFFICE Docs
CriticalSoftwareCVE-2021-3199
Actively exploited. Listed in CISA’s Known Exploited Vulnerabilities catalog: exploitation is observed, not theoretical.
What to do
Check the vendor advisory for the fixed version. This flaw is being actively exploited: patch now.
A path traversal flaw affects ONLYOFFICE Docs. Apply the vendor’s patch. It is being actively exploited: patch now.
What the flaw allows: Files outside the intended scope can be read or written.
- Ecosystem
- Application software
- Class
- Path traversal
- Published on
- October 8, 2026
Sources
Entry built automatically from the cited security advisory, with no model rewriting. Acknowledged by the organisation or vendor, notified to an authority, or established by two independent sources.