CVE-2026-63242 | BDVDB-2026-353585 Detail

Three LearningKoollab LMS

Description#

A business logic vulnerability in Koollab LMS allowed an authenticated learner to set their lesson completion status to completed via the SCORM commit endpoint without viewing the lesson material, compromising training and completion records.

Impact#

Per CVSS v3.1: confidentiality impact none, integrity impact low, availability impact none. Attack vector: network.

Weaknesses#

CWE-639 Authorization Bypass Through User-Controlled Key

References#

https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-094/

Exploit#

No public exploit known

History#

Version 12026-07-29Record published in the CVE List.

Published

Published: 2026-07-29
Last modified: 2026-07-29

Vendor information

Vendor: Three Learning
Product: Koollab LMS

All Three Learning vulnerabilities

Score

4.3 Medium

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 17.1.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Insecure Direct Object Reference

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
5.3.2
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

4.3 Medium

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	Low
User Interaction	None
Scope	Unchanged
Confidentiality	None
Integrity	Low
Availability	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).