QwikSec

Security Database

CVE

CWE

Training

CVE-2019-25369

Published: Feb 15, 2026

Modified: Mar 5, 2026

PUBLISHED

CVSS v3.1

6.4

MEDIUM

Description

OPNsense 19.1 contains a stored cross-site scripting vulnerability in the system_advanced_sysctl.php endpoint that allows attackers to inject persistent malicious scripts via the tunable parameter. Attackers can submit POST requests with script payloads that are stored and executed in the context of authenticated user sessions when the page is viewed.

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:L/UI:N/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

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 Stored XSS via system_advanced_sysctl.php

third-party-advisory

Security Training

Train your team to recognize and prevent security threats with our comprehensive security awareness program.

Vulnerability Scanning

Discover vulnerabilities in your applications and infrastructure before attackers do.