CVE-2019-25378
Received Received - Intake
Multiple XSS Vulnerabilities in Smoothwall Express proxy.cgi Endpoint

Publication date: 2026-02-16

Last updated on: 2026-02-20

Assigner: VulnCheck

Description
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.
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Meta Information
Published
2026-02-16
Last Modified
2026-02-20
Generated
2026-06-16
AI Q&A
2026-02-16
EPSS Evaluated
2026-06-14
NVD
CVE-2019-25378
EUVD
EUVD-2019-19621
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
smoothwall smoothwall_express 3.1
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
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Executive Summary

This vulnerability exists in Smoothwall Express 3.1-SP4-polar-x86_64-update9 and involves multiple cross-site scripting (XSS) issues in the proxy.cgi endpoint.

Attackers can inject malicious scripts through certain parameters such as CACHE_SIZE, MAX_SIZE, MIN_SIZE, MAX_OUTGOING_SIZE, and MAX_INCOMING_SIZE by submitting POST requests containing script payloads.

These scripts can then be stored or reflected, causing arbitrary JavaScript code to execute in the browsers of users who access the proxy configuration page.

Impact Analysis

This vulnerability can allow attackers to execute arbitrary JavaScript code in the browsers of users accessing the proxy configuration page.

Such execution can lead to theft of sensitive information, session hijacking, or other malicious actions performed on behalf of the user.

Because the vulnerability requires user interaction (UI:R) and can be exploited remotely without privileges, it poses a moderate risk.

Compliance Impact

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