CVE-2026-23620CWE-203

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

Medium · published February 19, 2026

CVSS v4.0
5.3
EPSS
0%
Percentile
11.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
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
EPSS
0.00213 · 11.0th percentile
Weakness
CWE-203 · Observable Discrepancy
Published
2026-02-19T18:00Z
EPSS history
Timeline
  • 19 FEB 18:00Z
    GFI MailEssentials AI < 22.4 ListServer.IsDBExist() Absolute Directory Traversal to File Enumeration
    cvelistv5