CVE-2025-10254
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-11

Last updated on: 2026-04-29

Assigner: VulDB

Description
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."
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Meta Information
Published
2025-09-11
Last Modified
2026-04-29
Generated
2026-06-16
AI Q&A
2025-09-11
EPSS Evaluated
2026-06-15
NVD
CVE-2025-10254
EUVD
EUVD-2025-28920
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
ascensio_system_sia onlyoffice 12.7.0
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
CWE-94 The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.
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Executive Summary

This vulnerability is a cross-site scripting (XSS) issue found in Ascensio System SIA OnlyOffice up to version 12.7.0. It occurs due to improper processing of the file /Products/Projects/Messages.aspx in the SVG Image Handler component. An attacker can remotely manipulate this to execute malicious scripts in the context of a user's browser.

Impact Analysis

The vulnerability can allow an attacker to perform cross-site scripting attacks, which may lead to the execution of malicious scripts in a user's browser. This can result in unauthorized actions performed on behalf of the user, potential theft of session tokens or sensitive information, and could compromise user interactions with the affected application.

Mitigation Strategies

Since the vendor is working on patches to resolve this issue, the immediate mitigation step is to monitor for updates from Ascensio System SIA and apply the security patches as soon as they are released. Additionally, consider restricting access to the /Products/Projects/Messages.aspx component or implementing web application firewall (WAF) rules to block potential cross-site scripting attempts targeting the SVG Image Handler.

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