High severity8.8NVD Advisory· Published May 15, 2026· Updated May 18, 2026
CVE-2021-47964
CVE-2021-47964
Description
Schlix CMS 2.2.6-6 contains a remote code execution vulnerability that allows authenticated attackers to execute arbitrary PHP code by uploading malicious extension packages through the block manager. Attackers can upload a crafted ZIP file containing PHP code in the packageinfo.inc file and trigger execution by accessing the About tab of the installed extension.
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Affected products
1Patches
Vulnerability mechanics
References
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