CVE-2019-25374

MEDIUM

OPNsense 19.1 - Reflected Cross-Site Scripting via vpn_ipsec_settings.php passthrough_networks Parameter

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2019-25374. PoCs published by Ozer Goker.

AI-analyzed exploit summary This exploit demonstrates multiple reflected and stored XSS vulnerabilities in OPNsense 19.1. It provides specific URLs, methods, parameters, and payloads for each XSS vector.

Description

OPNsense 19.1 contains a reflected cross-site scripting vulnerability that allows attackers to inject malicious scripts by exploiting the passthrough_networks parameter in vpn_ipsec_settings.php. Attackers can craft POST requests with JavaScript payloads in the passthrough_networks parameter to execute arbitrary code in users' browsers.

Exploits (1)

exploitdb WORKING POC
by Ozer Goker · textwebappsphp
https://www.exploit-db.com/exploits/46351

This exploit demonstrates multiple reflected and stored XSS vulnerabilities in OPNsense 19.1. It provides specific URLs, methods, parameters, and payloads for each XSS vector.

Classification
Working Poc 95%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: OPNsense 19.1
Auth required
Prerequisites: Access to the OPNsense web interface · Valid credentials for authenticated endpoints
MITRE ATT&CK
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4
Core References
Exploit, Third Party Advisory exploit
https://www.exploit-db.com/exploits/46351
Various Sources product
https://opnsense.org

Scores

CVSS v3 6.1
EPSS 0.0032
EPSS Percentile 23.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (2)
opnsense/opnsense 19.1
Opnsense/OPNsense 19.1
Published Feb 15, 2026
Tracked Since Feb 18, 2026