CVE-2025-5301

Public Exploit
Reflected Cross-Site Scripting in ONLYOFFICE Docs (DocumentServer)

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.

Remediation

Solution:

  • The vendor provides a patched version v8.3.2 (or higher) which can be downloaded from: https://github.com/ONLYOFFICE/DocumentServer/

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.03%
Third-Party Advisory sec-consult.com
Affected: OnlyOffice Docs (DocumentServer)
Published at:
Updated at:

References

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

Frequently Asked Questions

What is the severity of CVE-2025-5301?
CVE-2025-5301 has been scored as a medium severity vulnerability.
How to fix CVE-2025-5301?
To fix CVE-2025-5301: The vendor provides a patched version v8.3.2 (or higher) which can be downloaded from: https://github.com/ONLYOFFICE/DocumentServer/
Is CVE-2025-5301 being actively exploited in the wild?
It is possible that CVE-2025-5301 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-5301?
CVE-2025-5301 affects OnlyOffice Docs (DocumentServer).
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