CVE-2026-23607
Received Received - Intake
Stored XSS in GFI MailEssentials Anti-Spam Whitelist Interface

Publication date: 2026-02-19

Last updated on: 2026-02-20

Assigner: VulnCheck

Description
GFI MailEssentials AI versions prior to 22.4 contain a stored cross-site scripting vulnerability in the Anti-Spam Whitelist management interface. An authenticated user can supply HTML/JavaScript in the ctl00$ContentPlaceHolder1$pv1$txtDescription parameter to /MailEssentials/pages/MailSecurity/Whitelist.aspx, which is stored and later rendered in the management interface, allowing script execution in the context of a logged-in user.
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Meta Information
Published
2026-02-19
Last Modified
2026-02-20
Generated
2026-06-16
AI Q&A
2026-02-19
EPSS Evaluated
2026-06-15
NVD
CVE-2026-23607
EUVD
EUVD-2026-7811
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
gfi mailessentials to 22.4 (exc)
Helpful Resources
Exploitability
CWE
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KEV
KEV Icon
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

GFI MailEssentials AI versions prior to 22.4 contain a stored cross-site scripting (XSS) vulnerability in the Anti-Spam Whitelist management interface.

An authenticated user can input HTML or JavaScript code into a specific parameter (ctl00$ContentPlaceHolder1$pv1$txtDescription) on the Whitelist.aspx page.

This malicious code is stored and later executed in the context of a logged-in user when the management interface renders it, allowing script execution within the application.

Impact Analysis

This vulnerability allows an authenticated user to execute arbitrary scripts within the management interface of GFI MailEssentials AI.

Such script execution can lead to unauthorized actions being performed on behalf of the logged-in user, potentially compromising the integrity and security of the system.

It may enable attackers to steal session tokens, manipulate data, or perform other malicious activities within the context of the affected application.

Compliance Impact

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Detection Guidance

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Mitigation Strategies

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