CVE-2025-5301mediumCWE-79

CVE-2025-5301: medium-severity vulnerability in OnlyOffice Docs (DocumentServer)

Reflected Cross-Site Scripting in ONLYOFFICE Docs (DocumentServer)

Published 12 Jun 2025 · Updated 18 Jun 2025

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40Vexday Risk Score

Patch soon. It has a working public exploit.

ssvc Attendcvss 6.1epss 62%

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

OnlyOffice · Docs (DocumentServer)

References

http://seclists.org/fulldisclosure/2025/Jun/18 https://github.com/ONLYOFFICE/DocumentServer/blob/master/CHANGELOG.md#832 https://r.sec-consult.com/onlyoffice https://sec-consult.com/vulnerability-lab/advisory/reflected-cross-site-scripting-in-onlyoffice-docs-documentserver/