CVE-2025-59903 PUBLISHED

Multiple vulnerabilities in Kubysoft

Assigner: INCIBE
Reserved: 23.09.2025 Published: 16.02.2026 Updated: 16.02.2026

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.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:L/SC:L/SI:L/SA:N
CVSS Score: 5.1

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	Low
Attack Complexity	Low	Integrity	None	Integrity	Low
Attack Requirements	None	Availability	Low	Availability	None
Privileges Required	Low
User Interaction	Passive

CVSS 4.0

Product Status

Vendor	Kubysoft
Product	Kubysoft
Versions	Default: unaffected Version All versions is affected

Solutions

The vulnerabilities have been fixed by the Kubysoft team in the latest version of the software.

Credits

David Padilla Alvarado finder

References

https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-kubysoft

Problem Types

CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') CWE