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Medium · 4.3 CVE-2026-23621 EUVD-2026-8317GHSA-pcxg-vcf2-rp56

GFI MailEssentials AI < 22.4 ListServer.IsPathExist() Absolute Directory Traversal to File Enumeration

Published Feb 19, 2026 · Updated May 14, 2026 · Assigned by VulnCheck

Description

GFI MailEssentials AI versions prior to 22.4 contain an arbitrary directory existence enumeration vulnerability in the ListServer.IsPathExist() web method exposed at /MailEssentials/pages/MailSecurity/ListServer.aspx/IsPathExist. An authenticated user can supply an unrestricted filesystem path via the JSON key \"path\", which is URL-decoded and passed to Directory.Exists(), allowing the attacker to determine whether arbitrary directories exist on the server.

Affected products

VendorProductAffectedFixed
GFI Software MailEssentials AI < 22.4 22.4

References