CVE-2026-4816 Reflected Cross Site Scripting (XSS) vulnerability in Support Board

Medium 4.8 Published 25 Mar 2026 Updated 25 Mar 2026

Attackers can execute JavaScript in victims' browsers via a malicious URL, potentially stealing session cookies or performing actions on behalf of the user.

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-2026-4816?

CVE-2026-4816 is a medium-severity cross-site scripting vulnerability in Schiocco Support Board, published on 25 Mar 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

A Reflected Cross Site Scripting (XSS) vulnerability has been found in Support Board v3.7.7. This vulnerability allows an attacker to execute JavaScript code in the victim's browser by sending the victim a malicious URL using the 'search' parameter in '/supportboard/include/articles.php'. This vulnerability can be exploited to steal sensitive user data, such as session cookies, or to perform actions on behalf of the user.

Weakness: CWE-79

Which versions are affected by CVE-2026-4816?

It affects 1 product.

Products include Schiocco Support Board.

How do I fix CVE-2026-4816?

No fix has been published for CVE-2026-4816 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-2026-4816 being exploited?

There is no known exploitation of CVE-2026-4816 in the wild and no public exploit code.

Sources

Also known as GHSA-r9fv-65q7-7m5c.