by Kastro
Paper/Archive/CVE-2026-63227

CVE-2026-63227

An unrestricted SCORM file upload vulnerability in Koollab LMS allowed an authenticated module designer to upload a SCORM package containing a PHP webshell to a publicly accessible directory and execute arbitrary code on the server. Koollab LMS — Unrestricted SCORM file upload vulnerability

EPSS 0.6%CVSS 9.9
critical.is priorityof 100
39
CVSS 9.9 (CNA)9.9 / 10 × 3029.7Not in CISA KEV+300.0EPSS percentile 48.3.482 × 209.7No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

An unrestricted SCORM file upload vulnerability in Koollab LMS allowed an authenticated module designer to upload a SCORM package containing a PHP webshell to a publicly accessible directory and execute arbitrary code on the server.

Affected

ProductAffectedFixed inSource
Koollab LMS5.3.2–CNA

Scores by source

CSA (CNA)9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

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