CVE-2026-23616
Received Received - Intake
Stored XSS in GFI MailEssentials Anti-Spoofing Configuration

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-Spoofing configuration page. An authenticated user can supply HTML/JavaScript in the ctl00$ContentPlaceHolder1$AntiSpoofingGeneral1$TxtSmtpDesc parameter to /MailEssentials/pages/MailSecurity/AntiSpoofing.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
2026-06-14
NVD
CVE-2026-23616
EUVD
EUVD-2026-8323
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
gfi mailessentials to 22.4 (exc)
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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 stored cross-site scripting (XSS) issue found in GFI MailEssentials AI versions prior to 22.4. It occurs on the Anti-Spoofing configuration page where an authenticated user can input HTML or JavaScript code into a specific parameter. This malicious code is then stored and later executed within the management interface when viewed by a logged-in user, allowing script execution in their context.

Impact Analysis

The impact of this vulnerability includes the potential for an attacker with authenticated access to execute arbitrary scripts within the management interface. This can lead to unauthorized actions performed on behalf of the logged-in user, theft of sensitive information, session hijacking, or further compromise of the system.

Compliance Impact

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