CVE-2025-13646 Modula 2.13.1 - 2.13.2 - Authenticated (Author+) Arbitrary File Upload via Race Condition

High 7.5 Published 3 Dec 2025 Updated 3 Dec 2025

Authenticated attackers can upload arbitrary files via a race condition in the Modula Image Gallery plugin, potentially leading to remote code execution.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-13646?

CVE-2025-13646 is a high-severity vulnerability in wpchill Image Gallery – Photo Grid & Video Gallery, published on 3 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

The Modula Image Gallery plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'ajax_unzip_file' function in versions 2.13.1 to 2.13.2. This makes it possible for authenticated attackers, with Author-level access and above, to upload arbitrary files with race condition on the affected site's server which may make remote code execution possible.

Weakness: CWE-434

Which versions are affected by CVE-2025-13646?

It affects 1 product.

Products include Wpchill Modula Image Gallery.

How do I fix CVE-2025-13646?

No fix has been published for CVE-2025-13646 yet. Limit exposure of the affected software until one is available.

Is CVE-2025-13646 being exploited?

There is no known exploitation of CVE-2025-13646 in the wild and no public exploit code.

Sources

Also known as GHSA-45f2-8284-5w23.