ONLYOFFICE Docs Server Path Traversal Vulnerability
High CISA KEV
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.
Remediation
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes).
Affected PHP branches
See the source advisory.
Source: CISA Known Exploited Vulnerabilities Catalog · retrieved 2026-10-22T10:19:14-04:00 · https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json