Redaxo has a Mediapool isAllowedExtension bypass via multi-segment filename that leads to authenticated RCE on Apache mod_php multi-extension handlers

Summary rexmediapool::isAllowedExtension in redaxo/src/addons/mediapool/lib/mediapool.php accepts filenames that contain a blocked extension as a non-terminal segment of a longer extension chain, for example shell.php.any.jpg. The check only catches the blocked extension when it appears at the en...

CVE-2026-53599 Redaxo has a Mediapool isAllowedExtension bypass via multi-segment filename that leads to authenticated RCE on Apache mod_php multi-extension handlers

REDAXO is a PHP-based content management system. From 5.18.2 until 5.21.1, rexmediapool::isAllowedExtension in redaxo/src/addons/mediapool/lib/mediapool.php lets an authenticated backend user with mediaupload permission upload a JPEG/PHP polyglot named shell.php.any.jpg, which web servers with...

CVE-2026-53599 Redaxo has a Mediapool isAllowedExtension bypass via multi-segment filename that leads to authenticated RCE on Apache mod_php multi-extension handlers

REDAXO is a PHP-based content management system. From 5.18.2 until 5.21.1, rexmediapool::isAllowedExtension in redaxo/src/addons/mediapool/lib/mediapool.php lets an authenticated backend user with mediaupload permission upload a JPEG/PHP polyglot named shell.php.any.jpg, which web servers with...

CVE-2026-53599

CVE-2026-53599 affects REDAXO CMS versions 5.18.2–5.21.1 where rex_mediapool::isAllowedExtension lets an authenticated backend user with media[upload] permission upload a JPEG/PHP polyglot named shell.php.any.jpg. On servers with multi-extension PHP handlers, this can be executed as the web serve...

CVE-2026-35200

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 8.6.73 and 9.7.1-alpha.4, a file can be uploaded with a filename extension that passes the file extension allowlist e.g., .txt but with a Content-Type header that differs from the...

CVE-2021-22968

A bypass of adding remote files in Concrete CMS previously concrete5 File Manager leads to remote code execution in Concrete CMS concrete5 versions 8.5.6 and below.The external file upload feature stages files in the public directory even if they have disallowed file extensions. They are stored i...

Gym Management System 1.0 Remote Code Execution

Exploit Title: Gym Management System v1.0 - Unauthenticated Remote Code Execution Exploit Author: Bobby Cooke Date: May 21th, 2020 Vendor Homepage: https://projectworlds.in/ Software Link: https://projectworlds.in/free-projects/php-projects/gym-management-system-project-in-php/ Version: 1.0 Teste...