ByteOS Network

CVE Vulnerability Details :

CVE-2026-23609

PUBLISHED

More Info Official Page

Assigner-VulnCheck

Assigner Org ID-83251b91-4cc7-4094-a5c7-464a1b83ea10

Published At-19 Feb, 2026 | 17:56

Updated At-19 Feb, 2026 | 19:22

▼CVE Numbering Authority (CNA)

GFI MailEssentials AI < 22.4 General Settings Perimeter SMTP Servers Description Stored XSS

GFI MailEssentials AI versions prior to 22.4 contain a stored cross-site scripting vulnerability in the Perimeter SMTP Servers configuration page. An authenticated user can supply HTML/JavaScript in the ctl00$ContentPlaceHolder1$pv3$txtDescription parameter to /MailEssentials/pages/MailSecurity/PerimeterSMTPServers.aspx, which is stored and later rendered in the management interface, allowing script execution in the context of a logged-in user.

Affected Products

Vendor

GFI Software

Product

MailEssentials AI

Default Status

unaffected

Versions

Affected

From 0 before 22.4 (semver)

Problem Types

Type	CWE ID	Description
CWE	CWE-79	CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')

Type: CWE

CWE ID: CWE-79

Description: CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')

Metrics

Version	Base score	Base severity	Vector
4.0	5.1	MEDIUM	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
3.1	5.4	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Version: 4.0

Base score: 5.1

Base severity: MEDIUM

Vector:

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

Version: 3.1

Base score: 5.4

Base severity: MEDIUM

Vector:

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

Credits

finder

Alex Williams from Pellera Technologies

coordinator

VulnCheck

References

Hyperlink	Resource
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-general-settings-perimeter-smtp-servers-description-stored-xss	third-party-advisory

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

Resource:

release-notes

patch

Hyperlink: https://www.vulncheck.com/advisories/gfi-mailessentials-ai-general-settings-perimeter-smtp-servers-description-stored-xss

Resource:

third-party-advisory

Affected Products

Affected

Problem Types

Metrics

Metrics Other Info

Impacts

Solutions

Configurations

Workarounds

Exploits

Credits

Timeline

Replaced By

Rejected Reason

References