CVE-2025-5301

Medium

Description

ONLYOFFICE Docs (DocumentServer) in versions equal and below 8.3.1 are affected by a reflected cross-site scripting (XSS) issue when opening files via the WOPI protocol. Attackers could inject malicious scripts via crafted HTTP POST requests, which are then reflected in the server's HTML response.

SeverityMedium

CVSS6.1

Exploit probability—

ProductDocs (DocumentServer)

PublishedJun 12, 2025

First seenJun 12, 2025

Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Vendor advisories

github.com/ONLYOFFICE/DocumentServer/blob/master/CHANGELOG.md#832

Affected products

Product	Affected versions	Fixed in
OnlyOffice Docs (DocumentServer)	<=8.3.1	—

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.