CVE-2026-63236: Three Learning Koollab LMS · Improper Access Control
Affects Three Learning Koollab LMSSource CVE Database V5
Not known to be exploited · CVSS 3.7 Low.
Data as of 28 Oct 2026, 05:11 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 17% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:NExploitation evidence
Disclosed: evidence found.
CVE published 29 Jul 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Three LearningKoollab LMS | Affected
| Fixed in– |
AI-suggested
Until a patch is available, restrict access to the SCORM API endpoint if possible or monitor for suspicious access patterns.
Description
CVE-2026-63236 is an improper access control vulnerability in Three Learning's Koollab LMS version 5.3.2. It allows an unauthenticated attacker to read sensitive user information such as names, internal identifiers, scores, lesson status, lesson position, and cached lesson state via the SCORM API endpoint. The vulnerability has a low severity score of 3.7 and does not impact integrity or availability. No official patch or remediation guidance is currently available.