CVE-2023-53906 ProjectSend r1605 Stored Cross-Site Scripting via Custom Assets Page

Medium 5.1 Published 17 Dec 2025 Updated 7 Apr 2026

Authenticated administrators can inject malicious JavaScript via custom assets, leading to persistent script execution for other users.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2023-53906?

CVE-2023-53906 is a medium-severity cross-site scripting vulnerability in projectSend, published on 17 Dec 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

projectSend r1605 contains a stored cross-site scripting vulnerability that allows authenticated administrators to inject malicious JavaScript through the custom assets configuration page. Attackers can craft a JavaScript payload in the custom assets section that will execute when other users load the affected page, enabling persistent script injection.

Weakness: CWE-79

Which versions are affected by CVE-2023-53906?

It affects 1 product.

Products include Projectsend Projectsend.

How do I fix CVE-2023-53906?

No fix has been published for CVE-2023-53906 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2023-53906 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-53906 exists.

Sources

Also known as GHSA-h6qj-492w-fjwr.