CVE-2026-3007

Stored Cross-Site Scripting (XSS) Vulnerability

MEDIUM

5.4

CVSS Score

Published: April 23, 2026 at 02:54 AM UTC

Updated: October 26, 2026 at 10:10 PM UTC

1 product affected across 1 vendorKoollab LMS

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Severity

MEDIUM5.4

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Koollab LMS · Three Learning

90%

5.3.2.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: cverecord

https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-042/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.4MEDIUMCSA

Attack Vector: NETWORK
Complexity: LOW
Privileges: LOW
User Interaction: REQUIRED
Scope: CHANGED
Confidentiality: LOW
Integrity: LOW
Availability: NONE

Vector?

Quick Info

StatusDEFERRED

CWE

CWE-79

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