Vulnerability · Published Jul 29, 2026 · Assigned by CSA
CVE-2026-63241Insecure direct object reference vulnerability
Low 3.1
In plain English
A low-severity authorization bypass via user-controlled key in Koollab LMS from Three Learning. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities).
Severity (CVSS 3.1)3.1Low
Exploit odds (30 days)0.2%top 87.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Three Learning | Koollab LMS | 5.3.2 |
Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N