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CVE-2026-63227 is a critical unrestricted file upload vulnerability affecting Koollab LMS version 5.3.2. The flaw exists in the handling of SCORM package uploads and allows an authenticated user with the module designer role to upload a malicious SCORM archive containing server-executable PHP content. Because the uploaded content is placed in a publicly accessible directory and can then be executed by the web server, the issue enables arbitrary code execution on the underlying server.
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No public exploit code observed for this vulnerability.
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An unrestricted SCORM file upload vulnerability in Koollab LMS that allows an authenticated module designer to upload a malicious SCORM package containing a PHP webshell and achieve arbitrary code execution on the server.
An unrestricted SCORM file upload vulnerability in Koollab LMS that allows an authenticated module designer to upload a PHP webshell and achieve arbitrary code execution on the server.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.