Unrated severityNVD Advisory· Published Feb 15, 2026· Updated Mar 5, 2026
OPNsense 19.1 Reflected XSS via diag_ping.php
CVE-2019-25371
Description
OPNsense 19.1 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by exploiting insufficient input validation in the host parameter. Attackers can submit crafted POST requests to the diag_ping.php endpoint with script payloads in the host parameter to execute arbitrary JavaScript in users' browsers.
Affected products
1Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
4- forum.opnsense.org/index.phpmitrepatch
- www.exploit-db.com/exploits/46351mitreexploit
- www.vulncheck.com/advisories/opnsense-reflected-xss-via-diagpingphpmitrethird-party-advisory
- opnsense.orgmitreproduct
News mentions
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