Medium severity4.3NVD Advisory· Published Feb 19, 2026· Updated Jun 17, 2026

CVE-2026-23621

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Gfi/Mailessentials2 versions
cpe:2.3:a:gfi:mailessentials:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:gfi:mailessentials:*:*:*:*:*:*:*:*range: <22.4
- (no CPE)range: <22.4
GFI Software/MailEssentials AIv5
Range: 0

Patches

Vulnerability mechanics

References

www.vulncheck.com/advisories/gfi-mailessentials-ai-listserver-ispathexist-absolute-directory-traversal-to-file-enumerationnvdThird Party Advisory
gfi.ai/products-and-solutions/network-security-solutions/mailessentials/resources/documentation/product-releasesnvdRelease Notes

News mentions

No linked articles in our index yet.

cvss	0.280
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000