CVSS base score
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
What the vulnerability does
The Auto Thumbnailer plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the uploadThumb() function in all versions up to, and including, 1.0. This makes it possible for authenticated attackers, with Contributor-level access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible.
Explanation of Vulnerability in Simple Terms
Auto Thumbnailer versions 1.0 and earlier allow authenticated users to upload files without proper validation. An attacker with low-level site access can upload malicious files, potentially gaining the ability to run code on the server. The vulnerability requires a valid user account but no special privileges.
What an attacker can do
Upload malicious files to the server and execute arbitrary code.
Potential impact on your site
A compromised user account or insider can take full control of your site.
Conditions required to exploit
Attacker must have a low-privilege user account on the site.
Key dates
External resources
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