Unrated severityNVD Advisory· Published Feb 19, 2026· Updated Mar 2, 2026

GFI MailEssentials AI < 22.4 Advanced Content Filtering Rule Stored XSS

CVE-2026-23606

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.

Affected products

Gfi/Mailessentialsllm-fuzzy
Range: <22.4
GFI Software/MailEssentials AIv5
Range: 0

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

gfi.ai/products-and-solutions/network-security-solutions/mailessentials/resources/documentation/product-releasesmitrerelease-notespatch
www.vulncheck.com/advisories/gfi-mailessentials-ai-advanced-content-filtering-rule-stored-xssmitrethird-party-advisory

News mentions

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