GHSA-P279-5WCV-45VQ Kunstmaan CMS: MediaBundle extension blacklist bypass allows authenticated administrators to upload executable PHP files leading to remote code execution

Summary The MediaBundle blocks dangerous upload extensions with a blacklist that was matched case-sensitively, while the stored filename was lowercased afterwards. A file uploaded as webshell.pHp therefore bypassed the blacklist and was written to the web-accessible upload directory as...

Kunstmaan CMS: MediaBundle extension blacklist bypass allows authenticated administrators to upload executable PHP files leading to remote code execution

Summary The MediaBundle blocks dangerous upload extensions with a blacklist that was matched case-sensitively, while the stored filename was lowercased afterwards. A file uploaded as webshell.pHp therefore bypassed the blacklist and was written to the web-accessible upload directory as...

CVE-2026-104890

Kunstmaan CMS , a Symfony-based content management system, contains a blacklist bypass vulnerability in the MediaBundle extension (specifically in src/Kunstmaan/MediaBundle/Helper/File/FileHandler.php). Prior to version 7.3.2 , the FileHandler::getFilePath function performs a case-sensitive check...

CVE-2026-104890 Kunstmaan CMS: MediaBundle extension blacklist bypass allows authenticated administrators to upload executable PHP files leading to remote code execution

Kunstmaan CMS is an open source content management system based on the Symfony framework. Prior to 7.3.2, src/Kunstmaan/MediaBundle/Helper/File/FileHandler.php performs the blacklistedextensions check case-sensitively in FileHandler::getFilePath and lowercases the stored extension afterward. An...

CVE-2026-104890 Kunstmaan CMS: MediaBundle extension blacklist bypass allows authenticated administrators to upload executable PHP files leading to remote code execution

Kunstmaan CMS is an open source content management system based on the Symfony framework. Prior to 7.3.2, src/Kunstmaan/MediaBundle/Helper/File/FileHandler.php performs the blacklistedextensions check case-sensitively in FileHandler::getFilePath and lowercases the stored extension afterward. An...

CVE-2026-104890 Kunstmaan CMS: MediaBundle extension blacklist bypass allows authenticated administrators to upload executable PHP files leading to remote code execution

Kunstmaan CMS is an open source content management system based on the Symfony framework. Prior to 7.3.2, src/Kunstmaan/MediaBundle/Helper/File/FileHandler.php performs the blacklistedextensions check case-sensitively in FileHandler::getFilePath and lowercases the stored extension afterward. An...

CVE-2026-82396: Improper Neutralization of Input During Web Page Generation

Sulu is an open-source PHP content management system based on the Symfony framework. Prior to versions 2.6.25 and 3.0.8, src/Sulu/Bundle/MediaBundle/Controller/MediaStreamController.php allows the /media/id/download/slug route and its administration variant to honor the inline query parameter for...

CVE-2026-82395: Authorization Bypass Through User-Controlled Key

Sulu is an open-source PHP content management system based on the Symfony framework. Prior to versions 2.6.25 and 3.0.8, the media move endpoint derives its permission check from the client-supplied collection value instead of the media item's actual source collection, and...