CVE-2025-10254CWE-79CWE-94

Ascensio System SIA OnlyOffice SVG Image Messages.aspx cross site scripting

Medium · published September 11, 2025

CVSS v4.0
5.1
EPSS
0%
Percentile
18.7
In the wild
Unconfirmed
What it is

A vulnerability was found in Ascensio System SIA OnlyOffice up to 12.7.0. This issue affects some unknown processing of the file /Products/Projects/Messages.aspx of the component SVG Image Handler. Performing manipulation results in cross site scripting. The attack may be initiated remotely. The exploit has been made public and could be used. The vendor was informed early about this issue and replied: "We are already working on this case, and the issues will be resolved in one of the upcoming patches."

The record
Technical detail
CVSS v4.0
5.1 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
EPSS
0.00273 · 18.7th percentile
Weaknesses
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'); CWE-94 · Improper Control of Generation of Code ('Code Injection')
Published
2025-09-11T15:32Z
EPSS history
Timeline
  • 11 SEP 15:32Z
    Ascensio System SIA OnlyOffice SVG Image Messages.aspx cross site scripting
    cvelistv5