Express CVEs and Security Vulnerabilities

CVE-2026-26352

Smoothwall Express < 3.1 Update 13 Stored XSS in vpnmain.cgi via VPN_IP Parameter

Smoothwall Express versions prior to 3.1 Update 13 contain a stored cross-site scripting vulnerability in the /cgi-bin/vpnmain.cgi script due to improper sanitation of the VPN_IP parameter. Authenticated attackers can inject arbitrary JavaScript through VPN configuration settings that executes when the affected page is viewed by other users.

CVSS 4.0 · 5.1 Medium EPSS < 1% KEV · Not listed

Vendors

Smoothwall

Products

Express Smoothwall Express

CVE-2026-27508

Smoothwall Express < 3.1 Update 13 Reflected XSS in redirect.cgi via url Parameter

Smoothwall Express versions prior to 3.1 Update 13 contain a reflected cross-site scripting vulnerability in the /redirect.cgi endpoint due to improper sanitation of the url parameter. Attackers can craft malicious URLs with javascript: schemes that execute arbitrary JavaScript in victims' browsers when clicked through the unsanitized link.