CVE-2026-63236 | BDVDB-2026-353579 Detail

Three LearningKoollab LMS

Description#

An improper access control vulnerability in Koollab LMS allowed an unauthenticated attacker to read another user's name, internal identifier, scores, lesson status, lesson position, and cached lesson state via the SCORM API endpoint.

Impact#

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

Weaknesses#

CWE-284 Improper Access Control

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

3.7 Low

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 18.1.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Improper Access Control

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

3.7 Low

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

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

CVSS v3.0

Not available

CVSS v2

Not available

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