Home

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.

PUBLISHED Reserved 2026-02-15 | Published 2026-02-15 | Updated 2026-02-17 | Assigner VulnCheck




MEDIUM: 5.1CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
MEDIUM: 6.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Problem types

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

Product status

19.1
affected

Credits

Ozer Goker finder

References

www.exploit-db.com/exploits/46351 (ExploitDB-46351) exploit

opnsense.org (OPNsense Official Website) product

forum.opnsense.org/index.php?topic=11469.0 (OPNsense 19.1.1 Release Announcement) patch

www.vulncheck.com/...e-reflected-xss-via-vpnipsecsettingsphp (VulnCheck Advisory: OPNsense 19.1 Reflected XSS via vpn_ipsec_settings.php) third-party-advisory

cve.org (CVE-2019-25374)

nvd.nist.gov (CVE-2019-25374)

Download JSON