CVE-2025-59903
Received Received - Intake
Stored XSS in Kubysoft via Unsanitized SVG Uploads

Publication date: 2026-02-16

Last updated on: 2026-03-09

Assigner: Spanish National Cybersecurity Institute, S.A. (INCIBE)

Description
Stored Cross-Site Scripting (XSS) vulnerability in Kubysoft, where uploaded SVG images are not properly sanitized. This allows attackers to embed malicious scripts within SVG files as visual content, which are then stored on the server and executed in the context of any user accessing the compromised resource.
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Meta Information
Published
2026-02-16
Last Modified
2026-03-09
Generated
2026-06-16
AI Q&A
2026-02-16
EPSS Evaluated
2026-06-15
NVD
CVE-2025-59903
EUVD
EUVD-2025-206983
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
kubysoft kubysoft *
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.
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Impact Analysis

The impact of this vulnerability is that attackers can execute malicious scripts in the browsers of users who access the affected SVG images. This can lead to unauthorized actions performed on behalf of the user, theft of sensitive information, session hijacking, or other malicious activities depending on the script's intent.

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Executive Summary

This vulnerability is a Stored Cross-Site Scripting (XSS) issue in Kubysoft. It occurs because uploaded SVG images are not properly sanitized, allowing attackers to embed malicious scripts within these SVG files. These malicious scripts are then stored on the server and executed in the context of any user who accesses the compromised resource.

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