CVE-2025-10255CWE-79CWE-94

Ascensio System SIA OnlyOffice Comment Messages.aspx cross site scripting

Medium · published September 11, 2025

CVSS v4.0
5.1
EPSS
0%
Percentile
24.3
In the wild
Unconfirmed
What it is

A vulnerability was determined in Ascensio System SIA OnlyOffice up to 12.7.0. Impacted is an unknown function of the file /Products/Projects/Messages.aspx of the component Comment Handler. Executing manipulation can lead to cross site scripting. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. 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
0.00325 · 24.3th 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
2025-09-11T16:02Z
EPSS history
Timeline
  • 11 SEP 16:02Z
    Ascensio System SIA OnlyOffice Comment Messages.aspx cross site scripting
    cvelistv5