VULNERABILITY INTELLIGENCE

CVE-2019-25375

CVSS score5.1 MEDIUM

EPSS probability0.42%

CISA KEVNot currently listed

Published2026-02-15

Last modified2026-06-17

CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

Description

OPNsense 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.

Weakness classification

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Primary references

disclosure@vulncheck.com — Release Notes
disclosure@vulncheck.com — Product
disclosure@vulncheck.com — Exploit, Third Party Advisory, VDB Entry
disclosure@vulncheck.com — Third Party Advisory