Quick answers
- Is CVE-2026-63227 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-63227 being exploited in the wild.
- How severe is CVE-2026-63227?
- Critical severity, with a CVSS score of 9.9, published 29 July 2026.
- Which products and versions are affected?
- Three Learning Koollab LMS 5.3.2.
- Is there a fix for CVE-2026-63227?
- A patch was published on 2026-04-26: Vendor patched cloud instances Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-63227 attacked?
- It is attacked over the network, in a hosted service.
- Am I affected by CVE-2026-63227?
- Check whether you run Three Learning Koollab LMS at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
An unrestricted file upload vulnerability exists in the SCORM package upload functionality of Koollab LMS. An authenticated attacker with 'module designer' privileges can upload a SCORM package containing a PHP webshell. Because the application fails to validate the contents of the package and stores it in a publicly accessible directory, the attacker can execute arbitrary code on the server by requesting the uploaded PHP file. The vendor has patched this vulnerability across all cloud-hosted instances, and as a SaaS product, no user action is required.
Affected products
- Three Learning Koollab LMS 5.3.2
Timeline
- 2026-04-14: disclosed: Vendor disclosure
- 2026-04-26: patched: Vendor patched cloud instances
- 2026-07-29: advisory: Public release of advisory