CVE-2020-36996 PHPFusion 9.03.50 - Persistent Cross-Site Scripting
Attackers can inject malicious JavaScript into forum messages that executes in victim browsers when viewing the print page.
- 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-2020-36996?
CVE-2020-36996 is a medium-severity cross-site scripting vulnerability in Php-Fusion PHPFusion, published on 30 Jan 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
PHPFusion 9.03.50 contains a persistent cross-site scripting vulnerability in the print.php page that fails to properly sanitize user-submitted message content. Attackers can inject malicious JavaScript through forum messages that will execute when the print page is generated, allowing script execution in victim browsers.
Weakness: CWE-79
Which versions are affected by CVE-2020-36996?
How do I fix CVE-2020-36996?
No fix has been published for CVE-2020-36996 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-2020-36996 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-36996 exists.
Sources
Also known as GHSA-frj2-fj2r-89c8.