What is CVE-2025-59904?

CVE-2025-59904 is a medium-severity vulnerability in Kubysoft, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-02-16.

How severe is CVE-2025-59904?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Kubysoft

CVE-2025-59904

Stored Cross-Site Scripting (XSS) vulnerability in Kubysoft, which is triggered through multiple parameters in the '/kForms/app' endpoint. This issue allows malicious scripts to be injected and executed persistently in the context of users accessing the affected resource.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.001 (3.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Kubysoft — versions All versions

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cve-coordination@incibe.es (Third Party Advisory)

Frequently asked questions

What is CVE-2025-59904?: CVE-2025-59904 is a medium-severity vulnerability in Kubysoft, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-02-16.
How severe is CVE-2025-59904?: Medium severity. CVSS v3 base score is 5.4 out of 10.