CVE-2019-25372 MEDIUM

CVE-2019-25372: OPNsense 19.1 Reflected XSS via diag_traceroute.php

Vendor Opnsense
Product OPNsense
Weakness CWE-79 · XSS
Published February 15, 2026
Last update May 24, 2026

CVSS base score

5.1/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

What the vulnerability does

01Description

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 payloads through POST requests to diag_traceroute.php to execute arbitrary JavaScript in the context of a user's browser session.

Key dates

02Disclosure timeline

February 15, 2026 CVE published
May 24, 2026 Record updated