CVE-2019-25375

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  3. CVE-2019-25375

6.1 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

O

PNsense 19.1 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by submitting crafted input to the mailserver parameter. Attackers can send POST requests to the monit interface with JavaScript payloads in the mailserver parameter to execute arbitrary code in users' browsers.

References
Link Resource
https://forum.opnsense.org/index.php?topic=11469.0 Release Notes
https://opnsense.org Product
https://www.exploit-db.com/exploits/46351 Exploit Third Party Advisory VDB Entry
https://www.vulncheck.com/advisories/opnsense-reflected-xss-via-monit-interface Third Party Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:opnsense:opnsense:19.1:*:*:*:*:*:*:*
History

18 Feb 2026, 19:11

Type Values Removed Values Added
First Time Opnsense opnsense
Opnsense
References () https://forum.opnsense.org/index.php?topic=11469.0 - () https://forum.opnsense.org/index.php?topic=11469.0 - Release Notes
References () https://opnsense.org - () https://opnsense.org - Product
References () https://www.exploit-db.com/exploits/46351 - () https://www.exploit-db.com/exploits/46351 - Exploit, Third Party Advisory, VDB Entry
References () https://www.vulncheck.com/advisories/opnsense-reflected-xss-via-monit-interface - () https://www.vulncheck.com/advisories/opnsense-reflected-xss-via-monit-interface - Third Party Advisory
CPE cpe:2.3:a:opnsense:opnsense:19.1:*:*:*:*:*:*:*

18 Feb 2026, 17:52

Type Values Removed Values Added
Summary
  • (es) OPNsense 19.1 contiene una vulnerabilidad de cross-site scripting reflejado que permite a atacantes no autenticados inyectar scripts maliciosos al enviar una entrada manipulada al parámetro mailserver. Los atacantes pueden enviar solicitudes POST a la interfaz monit con cargas útiles de JavaScript en el parámetro mailserver para ejecutar código arbitrario en los navegadores de los usuarios.

15 Feb 2026, 14:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-02-15 14:16

Updated : 2026-02-18 19:11

NVD link : CVE-2019-25375

Mitre link : CVE-2019-25375

CVE.ORG link : CVE-2019-25375

JSON object : View

Products Affected

opnsense

CWE
CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')