CVE-2019-25372
Unknown Unknown - Not Provided

Reflected XSS in OPNsense diag_traceroute.php Allows Script Injection

Publication date: 2026-02-15

Last updated on: 2026-02-18

Assigner: VulnCheck

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

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Meta Information

Published
2026-02-15
Last Modified
2026-02-18
Generated
2026-07-06
AI Q&A
2026-02-15
EPSS Evaluated
2026-07-05
NVD
CVE-2019-25372
EUVD
EUVD-2019-19423

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
opnsense opnsense 19.1

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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Executive Summary

This vulnerability is a reflected cross-site scripting (XSS) issue in OPNsense 19.1. It occurs because the software does not properly validate input in the host parameter. An attacker can send specially crafted POST requests to the diag_traceroute.php page, injecting malicious scripts that execute in the browser of a user who views the response.

Impact Analysis

The vulnerability allows attackers to execute arbitrary JavaScript in the context of a user's browser session without authentication. This can lead to theft of sensitive information, session hijacking, or performing actions on behalf of the user, potentially compromising the security and privacy of affected users.

Compliance Impact

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