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.
Advisories

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Fixes

Solution

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Workaround

No workaround given by the vendor.

History

Fri, 20 Feb 2026 17:30:00 +0000

Type Values Removed Values Added
First Time appeared Gfi mailessentials
CPEs cpe:2.3:a:gfi:mailessentials:*:*:*:*:*:*:*:*
Vendors & Products Gfi mailessentials

Fri, 20 Feb 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Gfi
Gfi mailessentials Ai
Vendors & Products Gfi
Gfi mailessentials Ai

Thu, 19 Feb 2026 20:00:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'}


Thu, 19 Feb 2026 18:45:00 +0000

Type Values Removed Values Added
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.
Title GFI MailEssentials AI < 22.4 ListServer.IsPathExist() Absolute Directory Traversal to File Enumeration
Weaknesses CWE-203
References
Metrics cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-02-19T19:25:09.051Z

Reserved: 2026-01-14T16:02:29.336Z

Link: CVE-2026-23621

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2026-02-19T19:22:28.203

Modified: 2026-02-20T17:21:44.293

Link: CVE-2026-23621

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-02-20T10:05:59Z

Weaknesses