CVE-2019-25424 Comodo Dome Firewall 2.7.0 Reflected Cross-Site Scripting via https_exceptions

Medium 5.1 Published 19 Feb 2026 Updated 24 May 2026

Attackers can inject malicious scripts via the https_exceptions endpoint to steal session data from users of Comodo Dome Firewall.

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-2019-25424?

CVE-2019-25424 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 a reflected cross-site scripting vulnerability that allows attackers to inject malicious scripts by submitting unsanitized input to the EXCEPTIONSITELIST parameter. Attackers can craft POST requests to the https_exceptions endpoint with script payloads to execute arbitrary JavaScript in users' browsers and steal session data.

Weakness: CWE-79

Which versions are affected by CVE-2019-25424?

It affects 1 product.

Products include Comodo Dome Firewall.

How do I fix CVE-2019-25424?

No fix has been published for CVE-2019-25424 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-2019-25424 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-25424 exists.

Sources

Also known as GHSA-7952-xr2h-v2wg.