CVE-2025-5301

Reflected Cross-Site Scripting in ONLYOFFICE Docs (DocumentServer)

MEDIUM
6.1
CVSS Score
Published: June 12, 2025 at 07:59 AM UTC
Updated: June 17, 2026 at 09:47 AM UTC
1 product affected across 1 vendorDocument Server

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Severity
MEDIUM6.1
Exploit prediction
EPSS 62%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (4)

Release Notes
Source: 551230f0-3615-47bd-b7cc-93e92e730bbf
https://github.com/ONLYOFFICE/DocumentServer/blob/master/CHANGELOG.md#832
Third Party Advisory
Source: 551230f0-3615-47bd-b7cc-93e92e730bbf
https://r.sec-consult.com/onlyoffice
Source: af854a3a-2127-422b-91ae-364da2661108
http://seclists.org/fulldisclosure/2025/Jun/18

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.1MEDIUMCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-79

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