CVE-2019-25378 MEDIUM

CVE-2019-25378: Smoothwall Express 3.1 'proxy.cgi' Cross-Site Scripting

Vendor Smoothwall
Product Smoothwall Express
Weakness CWE-79 · XSS
Published February 16, 2026
Last update March 5, 2026

CVSS base score

5.1/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction
Confidentiality
Integrity

CVSS vector

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

What the vulnerability does

01Description

Smoothwall Express 3.1-SP4-polar-x86_64-update9 contains multiple cross-site scripting vulnerabilities in the proxy.cgi endpoint that allow attackers to inject malicious scripts through parameters including CACHE_SIZE, MAX_SIZE, MIN_SIZE, MAX_OUTGOING_SIZE, and MAX_INCOMING_SIZE. Attackers can submit POST requests with script payloads to store or reflect arbitrary JavaScript code that executes in users' browsers when the proxy configuration page is accessed.

Key dates

02Disclosure timeline

February 16, 2026 CVE published
March 5, 2026 Record updated