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

Published Feb 15, 2026
·
Updated

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 diagtraceroute.php to execute arbitrary JavaScript in the context of a user's browser session.

Affected Software

2 affected components
OPNsense OPNsense
OPNsense OPNsense=19.1

Remediation

Information

OPNsense 19.1.1 released

Event History

Feb 15, 2026
CVE Published
via MITRE·01:58 PM
Data Sourced
via MITRE·01:58 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·02:16 PM
DescriptionSeverityWeaknessAffected Software
Dec 7, 58362
Event
via NVD·12:14 AM
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Frequently Asked Questions

1

What is the severity of CVE-2019-25372?

CVE-2019-25372 is classified as a reflected cross-site scripting vulnerability that can allow malicious script injection.

2

How do I fix CVE-2019-25372?

To mitigate CVE-2019-25372, ensure that input validation in the host parameter of diag_traceroute.php is properly implemented.

3

Who is affected by CVE-2019-25372?

CVE-2019-25372 affects users of OPNsense version 19.1 who have not implemented sufficient input validation.

4

What type of attack can be executed using CVE-2019-25372?

CVE-2019-25372 enables unauthenticated attackers to execute reflected XSS attacks on vulnerable systems.

5

Can CVE-2019-25372 be exploited remotely?

Yes, CVE-2019-25372 can be exploited remotely since it does not require authentication to execute the attack.

Contact

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