CVE-2019-25374: Opnsense

Medium severity, CVSS 6.1. EPSS: 0.3% chance of exploitation in the next 30 days.

OPNsense 19.1 contains a reflected cross-site scripting vulnerability that allows attackers to inject malicious scripts by exploiting the passthrough_networks parameter in vpn_ipsec_settings.php. Attackers can craft POST requests with JavaScript payloads in the passthrough_networks parameter to execute arbitrary code in users' browsers.

Affected products

• Opnsense Opnsense: version 19.1 only

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