CVE-2026-23618
Received Received - Intake
Stored XSS in GFI MailEssentials AI Spam Keyword 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 Spam Keyword Checking (Subject) conditions interface. An authenticated user can supply HTML/JavaScript in the ctl00$ContentPlaceHolder1$pvSubject$TXB_SubjectCondition parameter to /MailEssentials/pages/MailSecurity/ASKeywordChecking.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-2026-23618
EUVD
EUVD-2026-7814
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
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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

GFI MailEssentials AI versions prior to 22.4 have a stored cross-site scripting (XSS) vulnerability in the Spam Keyword Checking (Subject) conditions interface.

An authenticated user can input HTML or JavaScript code into a specific parameter (ctl00$ContentPlaceHolder1$pvSubject$TXB_SubjectCondition) on the ASKeywordChecking.aspx page.

This malicious code is stored and later displayed in the management interface, which causes the script to execute in the context of a logged-in user.

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 with the privileges of the logged-in user, potentially compromising the integrity and security of the system.

Compliance Impact

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Detection Guidance

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Mitigation Strategies

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