plugin

Auto Thumbnailer Vulnerabilities

1 known security issue reported for the Auto Thumbnailer WordPress plugin. Most recent disclosed Dec 4, 2025.

1 high

Running Auto Thumbnailer on your site? Check whether your installed version is affected.

Auto Thumbnailer <= 1.0 - Authenticated (Contributor+) Arbitrary File Upload

high

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 aff...

CVSS:: 8.8
Affected:: up to 1.0
Fix:: No patched version reported
Disclosed:: Dec 4, 2025

CVE-2025-12154 on NVD →

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