What is CVE-2026-3007?

CVE-2026-3007 is a medium-severity vulnerability in Three Learning Koollab Management System, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-04-23.

How severe is CVE-2026-3007?

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

XSS in Three Learning Koollab Management System

CVE-2026-3007

Successful exploitation of the stored cross-site scripting (XSS) vulnerability could allow an attacker to execute arbitrary JavaScript on any user account that has access to Koollab LMS’ courselet feature.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (1.5th 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

Three Learning Koollab Management System — versions 5.3.2.

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

5f57b9bf-260d-4433-bf07-b6a79e9bb7d4

Frequently asked questions

What is CVE-2026-3007?: CVE-2026-3007 is a medium-severity vulnerability in Three Learning Koollab Management System, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-04-23.
How severe is CVE-2026-3007?: Medium severity. CVSS v3 base score is 5.4 out of 10.