CVE-2019-25387
Received Received - Intake
Reflected XSS in Smoothwall Express xtaccess.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 a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by submitting crafted input to the xtaccess.cgi endpoint. Attackers can inject script payloads through the EXT, DEST_PORT, or COMMENT parameters via POST requests to execute arbitrary JavaScript in victim browsers.
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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-2019-25387
EUVD
EUVD-2019-19627
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 is a reflected cross-site scripting (XSS) issue in Smoothwall Express 3.1-SP4-polar-x86_64-update9. It allows unauthenticated attackers to inject malicious JavaScript code by sending specially crafted input to the xtaccess.cgi endpoint. The injection can occur through the EXT, DEST_PORT, or COMMENT parameters via POST requests, which then execute arbitrary scripts in the browsers of victims who access the affected endpoint.

Impact Analysis

This vulnerability can impact you by allowing attackers to execute arbitrary JavaScript in the browsers of users interacting with the vulnerable endpoint. This can lead to theft of sensitive information such as cookies or session tokens, unauthorized actions performed on behalf of the user, or redirection to malicious websites. Since the attack requires no authentication, it can be exploited by anyone to compromise user security and privacy.

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