Insecure direct object reference vulnerability

published 2026-07-29 3mo ago modified 2026-10-23 19d ago also EUVD-2026-50136

cvss: 3.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 12%
public exploits: 0; none known

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.

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CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 3mo ago (2026-07-29)

Exploit prediction

0.22% chance of exploitation in the next 30 days, higher than 12% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by	version	score	vector
CNA	3.1	3.1	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

Affected products

Three Learning Koollab LMS

Classification

Weakness

CWE-639 Authorization Bypass Through User-Controlled Key

References

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

Sources

CVE List CVE-2026-63241
NVD CVE-2026-63241

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