GFI MailEssentials AI up to 22.3 Management Interface Whitelist.aspx ctl00$ContentPlaceHolder1$pv1$txtDescription cross site scripting

Summaryinfo

A vulnerability has been found in GFI MailEssentials AI up to 22.3 and classified as problematic. The affected element is an unknown function of the file /MailEssentials/pages/MailSecurity/Whitelist.aspx of the component Management Interface. The manipulation of the argument ctl00$ContentPlaceHolder1$pv1$txtDescription leads to cross site scripting. This vulnerability is traded as CVE-2026-23607. It is possible to initiate the attack remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in GFI MailEssentials AI up to 22.3. This issue affects an unknown part of the file /MailEssentials/pages/MailSecurity/Whitelist.aspx of the component Management Interface. The manipulation of the argument ctl00$ContentPlaceHolder1$pv1$txtDescription with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. The summary by CVE is:

GFI MailEssentials AI versions prior to 22.4 contain a stored cross-site scripting vulnerability in the Anti-Spam Whitelist management interface. An authenticated user can supply HTML/JavaScript in the ctl00$ContentPlaceHolder1$pv1$txtDescription parameter to /MailEssentials/pages/MailSecurity/Whitelist.aspx, which is stored and later rendered in the management interface, allowing script execution in the context of a logged-in user.

The weakness was shared by Alex Williams. It is possible to read the advisory at gfi.ai. The identification of this vulnerability is CVE-2026-23607 since 01/14/2026. The exploitation is known to be easy. The attack may be initiated remotely. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

By approaching the search of inurl:MailEssentials/pages/MailSecurity/Whitelist.aspx it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 22.4 eliminates this vulnerability.

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Productinfo

Type

• Artificial Intelligence Software

Vendor

• GFI

Name

• MailEssentials AI

Version

• 22.0
• 22.1
• 22.2
• 22.3

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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