Pluck CMS is vulnerable to an authenticated remote code execution (RCE) vulnerability through its “albums” module. Albums are used to create collections of images that can be inserted into web pages across the site. Albums allow the upload of various filetypes, which undergo a normalization process before being available on the site. Due to lack of file extension validation, it is possible to upload a crafted JPEG payload containing an embedded PHP web-shell. An attacker may navigate to it directly to achieve RCE on the underlying web server. Administrator credentials for the Pluck CMS web interface are required to access the albums module feature, and are thus required to exploit this vulnerability. CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C (8.2 High)

A file upload restriction bypass vulnerability in Pluck CMS before 4.7.13 allows an admin privileged user to gain access in the host through the "manage files" functionality, which may result in remote code execution.

An issue was discovered in Pluck before 4.7.7-dev2. /data/inc/images.php allows remote attackers to upload and execute arbitrary PHP code by using the image/jpeg content type for a .htaccess file.

An issue was discovered in Pluck before 4.7.6. Remote PHP code execution is possible because the set of disallowed filetypes for uploads in missing some applicable ones such as .phtml and .htaccess.

An issue was discovered in Pluck before 4.7.6. There is authenticated stored XSS because the character set for filenames is not properly restricted.

An issue was discovered in Pluck through 4.7.4. A stored cross-site scripting (XSS) vulnerability allows remote unauthenticated users to inject arbitrary web script or HTML into admin/blog Reaction Comments via a crafted URL.

Directory traversal vulnerability in data/inc/lib/pcltar.lib.php in Pluck 4.5.3, when register_globals is enabled, allows remote attackers to include and execute arbitrary local files via directory traversal sequences in the g_pcltar_lib_dir parameter.