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VULNERABILITIES

CVE-2026-23606 Details

Description

GFI MailEssentials AI versions prior to 22.4 contain a stored cross-site scripting vulnerability in the Advanced Content Filtering rule creation workflow. An authenticated user can supply HTML/JavaScript in the ctl00$ContentPlaceHolder1$pv1$txtRuleName parameter to /MailEssentials/pages/MailSecurity/advancedfiltering.aspx, which is stored and later rendered in the management interface, allowing script execution in the context of a logged-in user.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:5.4 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://gfi.ai/products-and-solutions/network-security-solutions/mailessentials/resources/documentation/product-releases [email protected]Release Notes
https://www.vulncheck.com/advisories/gfi-mailessentials-ai-advanced-content-filtering-rule-stored-xss [email protected]Third Party Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')[email protected]

Affected Products

ProductVersions
gfi mailessentials
< 22.4

CPE

  • cpe:2.3:a:gfi:mailessentials:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

5 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-23606
NVD Published Date:
Feb 19, 2026
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2026-23606 Details - Not Deferred