CVE-2023-53952 Dotclear 2.25.3 Authenticated Remote Code Execution via File Upload

High 8.7 Published 19 Dec 2025 Updated 7 Apr 2026

Authenticated attackers can upload malicious PHP files to execute arbitrary code on the server via the blog post interface.

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-2023-53952?

CVE-2023-53952 is a high-severity vulnerability in Dotclear, published on 19 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Dotclear 2.25.3 contains a remote code execution vulnerability that allows authenticated attackers to upload malicious PHP files with .phar extension through the blog post creation interface. Attackers can upload files containing PHP system commands that execute when the uploaded file is accessed, enabling arbitrary code execution on the server.

Weakness: CWE-434

Which versions are affected by CVE-2023-53952?

It affects 1 product.

Products include Dotclear Dotclear.

How do I fix CVE-2023-53952?

No fix has been published for CVE-2023-53952 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-53952 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-53952 exists.

Sources

Also known as GHSA-w6jr-fv5g-m8h5, UBUNTU-CVE-2023-53952.