CVE-2019-25378

MEDIUM 6.1

Smoothwall Express 3.1 'proxy.cgi' Cross-Site Scripting

CVSS Score

6.1

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-79
Vendor	smoothwall
Product	smoothwall express
Published	Feb 16, 2026
Last Updated	Mar 5, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

Smoothwall / Smoothwall Express

3.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

Ozer Goker