CVE-2019-25378

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.

Score

CVSS 3.1 6.1 Medium

Status

Analyzed - disclosure@vulncheck.com

Published

2026-02-16

Last modified

2026-03-05

Weaknesses

CWE-79

Affected products

• Smoothwall (Smoothwall)
• Smoothwall Express (Smoothwall)

References

• http://www.smoothwall.org
• https://www.exploit-db.com/exploits/46333
• https://www.vulncheck.com/advisories/smoothwall-express-proxycgi-cross-site-scripting