CVE-2026-26352
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.
Published:Mar 30, 2026
Last Modified:Apr 15, 2026
EPS:Mar 30, 2026
EPSS Score:0.00029
CVSS Score:5.4
Affected Products
Vendor
Product
Action
Vendor
Smoothwall
Product
Express
Smoothwall
Express
Vendor
Smoothwall
Product
Smoothwall Express
Smoothwall
Smoothwall Express
Exploits
No exploit reference
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
