CVE-2023-53980 ProjectSend r1605 Remote Code Execution via File Extension Manipulation

High 8.7 Published 22 Dec 2025 Updated 5 Mar 2026

Attackers can achieve remote code execution by uploading malicious files with disguised extensions via the upload endpoint.

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-2023-53980?

CVE-2023-53980 is a high-severity vulnerability in projectSend, published on 22 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

ProjectSend r1605 contains a remote code execution vulnerability that allows attackers to upload malicious files by manipulating file extensions. Attackers can upload shell scripts with disguised extensions through the upload.process.php endpoint to execute arbitrary commands on the server.

Weakness: CWE-434

Which versions are affected by CVE-2023-53980?

It affects 1 product.

Products include Projectsend Projectsend.

How do I fix CVE-2023-53980?

No fix has been published for CVE-2023-53980 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-53980 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-53980 exists.

Sources

Also known as GHSA-9wx9-rprp-6rxh.