Vulnerability · Published Apr 23, 2026 · Assigned by CSA
CVE-2026-3007Stored Cross-Site Scripting (XSS) Vulnerability
Medium 5.4
In plain English
A medium-severity cross-site scripting in Koollab Learning Management System from Three Learning. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities).
Severity (CVSS 3.1)5.4Medium
Exploit odds (30 days)0.2%top 93.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Three Learning | Koollab Learning Management System | 5.3.2. |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N