CVE-2019-25374

OPNsense 19.1 Reflected XSS via vpn_ipsec_settings.php

Published: Feb 15, 2026Updated: Feb 18, 2026 Sources: CVE List NVDCWE-79

6.1MEDIUM

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:RUser Interaction

Required

Scope

S:CScope

Changed

Impact

C:LConfidentiality

Low

I:LIntegrity

Low

A:NAvailability

None

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Weaknesses

CWE-79

Affected Products

Opnsense

oss-project

OPNsenseOn-prem

Networking Infrastructure / firewall

and 1 more affected products View all →

Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques

Execution

Initial Access

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References

https://forum.opnsense.org/index.php?topic=11469.0

forum.opnsense.org

https://opnsense.org

opnsense.org

https://www.exploit-db.com/exploits/46351

exploit-db.com

and 1 more references View all →

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Exploit details & PoC links

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