CVE-2019-25428 Comodo Dome Firewall 2.7.0 Cross-Site Scripting via openvpn_users

Medium 5.1 Published 19 Feb 2026 Updated 24 May 2026

Attackers can inject malicious scripts via POST parameters in the openvpn_users endpoint, allowing arbitrary JavaScript execution in victim browsers.

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

What is CVE-2019-25428?

CVE-2019-25428 is a medium-severity cross-site scripting vulnerability in Comodo Dome Firewall, published on 19 Feb 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Comodo Dome Firewall 2.7.0 contains multiple reflected cross-site scripting vulnerabilities in the openvpn_users endpoint that allow attackers to inject malicious scripts through POST parameters. Attackers can submit crafted POST requests with script payloads in the username, remotenets, explicitroutes, static_ip, custom_dns, or custom_domain parameters to execute arbitrary JavaScript in users' browsers.

Weakness: CWE-79

Which versions are affected by CVE-2019-25428?

It affects 1 product.

Products include Comodo Dome Firewall.

How do I fix CVE-2019-25428?

No fix has been published for CVE-2019-25428 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-2019-25428 being exploited?

There is no known exploitation of CVE-2019-25428 in the wild and no public exploit code.

Sources

Also known as GHSA-3qj5-q7c6-497q.