CVE-2025-34172 Netgate pfSense CE HAProxy Package 0.63_10 Reflected Cross-Site Scripting

Medium 4.8 Published 9 Sep 2025 Updated 14 Jul 2026

Authenticated attackers can execute arbitrary scripts in victim browsers via reflected XSS in the HAProxy stats page of pfSense CE.

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-2025-34172?

CVE-2025-34172 is a medium-severity cross-site scripting vulnerability in Netgate pfSense CE, published on 9 Sep 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

In pfSense CE /usr/local/www/haproxy/haproxy_stats.php, the value of the showsticktablecontent parameter is displayed after being read from HTTP GET requests. This can enable reflected cross-site scripting when the victim is authenticated.

Weakness: CWE-79

Which versions are affected by CVE-2025-34172?

It affects 1 product.

Products include Pfsense Pfsense.

How do I fix CVE-2025-34172?

No fix has been published for CVE-2025-34172 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-2025-34172 being exploited?

There is no known exploitation of CVE-2025-34172 in the wild and no public exploit code.

Sources

Also known as GHSA-qqrm-vqhm-v6vg.