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

Published Feb 16, 2026
·
Updated

Smoothwall Express 3.1-SP4-polar-x8664-update9 contains multiple cross-site scripting vulnerabilities in the proxy.cgi endpoint that allow attackers to inject malicious scripts through parameters including CACHESIZE, MAXSIZE, MINSIZE, MAXOUTGOINGSIZE, and MAXINCOMINGSIZE. 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.

Affected Software

2 affected components
Smoothwall Smoothwall Express
Smoothwall Smoothwall Express=3.1-sp4

Event History

Feb 16, 2026
CVE Published
via MITRE·05:04 PM
Data Sourced
via MITRE·05:04 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·06:19 PM
DescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2019-25378?

CVE-2019-25378 has been classified as a medium-severity cross-site scripting vulnerability.

2

How do I fix CVE-2019-25378?

To fix CVE-2019-25378, ensure that you update Smoothwall Express to the latest version that addresses this vulnerability.

3

What software is affected by CVE-2019-25378?

CVE-2019-25378 affects Smoothwall Express 3.1 and its versions, particularly 3.1-SP4-polar-x86_64-update9.

4

What are the potential impacts of CVE-2019-25378?

The potential impacts of CVE-2019-25378 include the ability for attackers to inject malicious scripts via the proxy.cgi endpoint.

5

Can CVE-2019-25378 be exploited remotely?

Yes, CVE-2019-25378 can be exploited remotely if an attacker can send requests to the vulnerable proxy.cgi endpoint.

Contact

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