CVE-2026-23605
Received Received - Intake

Stored XSS in GFI MailEssentials AI Attachment Filtering Module

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 Attachment Filtering rule creation workflow. An authenticated user can supply HTML/JavaScript in the ctl00$ContentPlaceHolder1$pv1$TXB_RuleName parameter to /MailEssentials/pages/MailSecurity/attachmentchecking.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
2026-07-07
AI Q&A
2026-02-19
EPSS Evaluated
2026-07-05
NVD
CVE-2026-23605
EUVD
EUVD-2026-7803

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 contain a stored cross-site scripting (XSS) vulnerability in the Attachment Filtering rule creation workflow.

An authenticated user can supply HTML or JavaScript code in a specific parameter (ctl00$ContentPlaceHolder1$pv1$TXB_RuleName) on the attachment checking page.

This malicious code is stored and later rendered in the management interface, which allows 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 on behalf 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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