CVE-2026-23620

Published: Feb 19, 2026

Modified: May 26, 2026

PUBLISHED

CVSS v3.1

4.3

MEDIUM

Description

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

Vendor	Product	Versions
GFI Software	MailEssentials AI	affected `0 - < 22.4`

Weaknesses (CWE)

CWE-203

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

References

https://gfi.ai/products-and-solutions/network-security-solutions/mailessentials/resources/documentation/product-releases

release-notes

patch

https://www.vulncheck.com/advisories/gfi-mailessentials-ai-listserver-isdbexist-absolute-directory-traversal-to-file-enumeration

third-party-advisory

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CVE-2026-23620

Description

Affected Products

Weaknesses (CWE)

CVSS v3.1 Details

References