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Joomla getk2.com K2 extensionJoomla Extension - getk2.org - Privileged RCE vulnerability in K2 extension for Joomla < 2.26

Risk 46
Severity
6.3
Malicious File Upload
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

The K2 frontend article-attachment upload path accepts files whose extension is .php, and Apache's standard modphp matches \.php$ and executes them under the K2 web user. A K2 Author can upload a shell.php, then fetch /media/k2/attachments/shell.php and execute arbitrary PHP code in the web server's context.

First published (updated )
CVE-2026-48946

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