SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2025-59903

Stored Cross-Site Scripting (XSS) vulnerability in Kubysoft, where uploaded SVG images are not properly sanitized.

MEDIUM 5.1EPSS 0.13%

Does this matter?

Lower severity and a low EPSS score (0.13%). Track it; it rarely justifies an emergency change on its own.

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.

CVSS 4.0
5.1 MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:L/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS
0.13% probability · 3th percentile
CISA KEV
Not listed
Weakness
CWE-79
Affected
kubysoft/kubysoft
Source
cve-coordination@incibe.es

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.