Unrated severityNVD Advisory· Published Feb 15, 2026· Updated Mar 5, 2026
OPNsense 19.1 Stored XSS via firewall_rules_edit.php
CVE-2019-25373
Description
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.
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Affected products
2Patches
Vulnerability mechanics
References
4- forum.opnsense.org/index.phpmitrepatch
- www.exploit-db.com/exploits/46351mitreexploit
- www.vulncheck.com/advisories/opnsense-stored-xss-via-firewallruleseditphpmitrethird-party-advisory
- opnsense.orgmitreproduct
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