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Vulnerability record · CVE-2025-5301 · published 12 June 2025

CVE-2025-5301: Cross-site scripting vulnerability

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.

6.1 CVSS 3.1 Medium EPSS 62% · top 0.8% CWE-79 · Cross-site scripting Deferred
6.1CVSS 3.1 base score
62%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

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.

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

References

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

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Source: NIST National Vulnerability Database (record CVE-2025-5301), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.