CVE-2021-3199

PoC ×2—

CVSS 3.1

9.8 critical

EPSS

8%p95

Published

Jan 26, 2021 (Jan 26, 2021)

Modified

Jun 17, 2026

Description

Directory traversal with remote code execution can occur in /upload in ONLYOFFICE Document Server before 5.6.3, when JWT is used, via a /.. sequence in an image upload parameter.

Vendors: onlyoffice
Products: document server
Weakness: CWE-22
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (8.2%)

In the news0 stories

No ingested article mentions this CVE yet.