CVE-2021-3199

CISA KEV

ACT NOW Priority: 0.00 BB Relevance: 0/100

Published: N/A Modified: N/A First seen: 2026-10-29 Status: pending_score

Description

ONLYOFFICE Docs contains a path traversal vulnerability that can occur when JWT is used, via a /.. sequence in an image upload parameter and could allow for remote code execution.

CISA Known Exploited Vulnerability

Vendor / Product ONLYOFFICE — Docs

Date Added 2026-10-08

Remediation Due 2026-10-11

This vulnerability could affect an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: ; https://github.com/ONLYOFFICE/DocumentServer/blob/903fe5ab7a275bd69c3c3346af2d21cf87ebeabf/CHANGELOG.md#563 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2021-3199