Description
An insecure direct object reference
vulnerability in Koollab LMS allowed an authenticated user to query the course completion progress
of any other user without authorisation, disclosing private learning progress
information.
Published: 2026-07-29
Score: 3.1 Low
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

An insecure direct object reference vulnerability in Koollab LMS allows an authenticated user to query the course completion progress of any other user without authorization, disclosing private learning progress information. The flaw is a classic information‑disclosure issue identified as CWE‑639.

Affected Systems

The affected product is Koollab LMS from Three Learning. No specific version information is provided.

Risk and Exploitability

The CVSS score of 3.1 indicates a low severity. The EPSS score of less than 1% implies a very low likelihood of exploitation, and the vulnerability is not listed in CISA’s KEV catalog. Attackers must first authenticate to a user account; from there they can request arbitrary progress data, leading to privacy violations.

Generated by OpenCVE AI on August 3, 2026 at 13:51 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Apply any available patch or update from Three Learning that resolves the insecure direct object reference issue.
  • Configure the LMS to enforce that progress queries return data only for the authenticated user, ensuring proper access control.
  • Audit system logs for unauthorized or repeated progress‑query activity and review access logs for potential misuse.

Generated by OpenCVE AI on August 3, 2026 at 13:51 UTC.

Tracking

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Advisories

No advisories yet.

History

Wed, 29 Jul 2026 15:30:00 +0000

Type Values Removed Values Added
First Time appeared Three Learning
Three Learning koollab Lms
Weaknesses CWE-639
Vendors & Products Three Learning
Three Learning koollab Lms
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 29 Jul 2026 06:45:00 +0000

Type Values Removed Values Added
Description An insecure direct object reference vulnerability in Koollab LMS allowed an authenticated user to query the course completion progress of any other user without authorisation, disclosing private learning progress information.
Title Insecure direct object reference vulnerability
References
Metrics cvssV3_1

{'score': 3.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N'}

Subscriptions

Three Learning Koollab Lms
cve-icon MITRE

Status: PUBLISHED

Assigner: CSA

Published:

Updated: 2026-07-29T14:21:35.225Z

Reserved: 2026-07-16T02:35:54.249Z

Link: CVE-2026-63241

cve-icon Vulnrichment

Updated: 2026-07-29T14:21:03.282Z

cve-icon NVD

Status : Deferred

Published: 2026-07-29T07:16:43.567

Modified: 2026-07-30T16:54:05.457

Link: CVE-2026-63241

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-03T14:00:07Z

Weaknesses
  • CWE-639

    Authorization Bypass Through User-Controlled Key