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ONLYOFFICE Docs Cross-Site Scripting Vulnerability in Comment Editing Form

Vulnerability

A cross-site scripting (XSS) vulnerability has been identified in ONLYOFFICE Docs versions prior to 9.2.1. The issue resides in the textarea of the comment editing form, allowing for the injection of malicious scripts. This vulnerability is related to DocumentServer.

Impact

Exploitation of this vulnerability allows for cross-site scripting, where an attacker can inject malicious scripts that are executed in the context of the user's browser.

Remediation

Users can update to ONLYOFFICE Docs version 9.2.1 or later, where this vulnerability has been fixed.

Added: Dec 24, 2025, 9:25 PM
Updated: Dec 24, 2025, 9:25 PM

Vulnerability Rating

Custom Algorithm
spread
5.2
impact
1.7
exploitability
5.2
remediation
8.3
relevance
1.6
threat
0.0
urgency
2.9
incentive
1.7

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.