The AR for WordPress plugin for WordPress is vulnerable to unauthorized double extension file upload due to a missing capability check on the set_ar_featured_image() function in all versions up to, and including, 7.3. This makes it possible for unauthenticated attackers to upload php files leveraging a double extension attack. It's important to note the file is deleted immediately and double extension attacks only work on select servers making this unlikely to be successfully exploited.

References

• https://nvd.nist.gov/vuln/detail/CVE-2024-12300
• https://plugins.trac.wordpress.org/browser/ar-for-wordpress/trunk/includes/ar-add-media.php?rev=3177638
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3206666%40ar-for-wordpress%2Ftrunk&old=3205240%40ar-for-wordpress%2Ftrunk&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/8b507369-49f7-4a1d-900b-c7bef40aec96?source=cve