CVE-2019-25374

MEDIUM 6.1CVE-2019-25374 · Published 15/02/2026 · updated 17/06/2026

In short

CVE-2019-25374 is a MEDIUM (CVSS 6.1) vulnerability affecting opnsense (opnsense).
Chance of exploitation in the next 30 days (EPSS): 0.37%, higher than 30.7% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
opnsense opnsense	`= 19.1`	No fix yet

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.

References

forum.opnsense.org/index.php · Release Notes
opnsense.org · Product
exploit-db.com/exploits/46351 · Exploit
vulncheck.com/advisories/opnsense-reflected-xss-via-vpnipsecsettingsphp · Broken Link

More vulnerabilities in opnsense

See all →

Running one of these products? Scan your site to see whether it exposes a vulnerable version.

Scan my site free

Package

Affected versions

Patched versions

opnsense

= 19.1

No fix yet

Description

More vulnerabilities in opnsense

See all →