CVE-2019-25373: Opnsense

Medium severity, CVSS 5.4. EPSS: 0.2% chance of exploitation in the next 30 days.

OPNsense 19.1 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject malicious scripts by submitting crafted input to the category parameter. Attackers can send POST requests to firewall_rules_edit.php with script payloads in the category field to execute arbitrary JavaScript in the browsers of other users accessing firewall rule pages.

Affected products

• Opnsense Opnsense: version 19.1 only

Published 2026-02-15. Last modified 2026-06-17.