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CVE

CWE

Training

CVE-2019-25371

Published: Feb 15, 2026

Modified: May 24, 2026

PUBLISHED

CVSS v3.1

6.1

MEDIUM

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.

Vendor	Product	Versions
Opnsense	OPNsense	affected `19.1`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

References

ExploitDB-46351

exploit

OPNsense Official Website

product

OPNsense 19.1.1 Release Announcement

patch

VulnCheck Advisory: OPNsense 19.1 Reflected XSS via diag_ping.php

third-party-advisory

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