CVE-2026-23609

MEDIUM
2026-02-19 [email protected]
5.4
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 22:03 vuln.today
CVE Published
Feb 19, 2026 - 18:24 nvd
MEDIUM 5.4

Tags

XSS Mailessentials

Description

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.

Analysis

GFI MailEssentials AI versions before 22.4 contain a stored cross-site scripting vulnerability in the Perimeter SMTP Servers configuration page that allows authenticated users to inject malicious scripts into the management interface. An attacker with valid credentials can execute arbitrary JavaScript in the context of other logged-in administrators by manipulating the description parameter. …

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Remediation

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

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Priority Score

27
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +27
POC: 0

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CVE-2026-23609 vulnerability details – vuln.today
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