CVE-2026-23608: GFI MailEssentials AI < 22.4 Email Management Mail Monitoring Rule Stored XSS
GFI MailEssentials AI versions prior to 22.4 contain a stored cross-site scripting vulnerability in the Mail Monitoring rule creation endpoint. An authenticated user can supply HTML/JavaScript in the JSON \"name\" field to /MailEssentials/pages/MailSecurity/MailMonitoring.aspx/Save, which is stored and later rendered in the management interface, allowing script execution in the context of a logged-in user.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-23608?
CVE-2026-23608 has been classified as a medium severity vulnerability.
How do I fix CVE-2026-23608?
To fix CVE-2026-23608, upgrade GFI MailEssentials AI to version 22.4 or later.
What types of attacks are possible due to CVE-2026-23608?
CVE-2026-23608 allows authenticated users to perform stored cross-site scripting attacks.
Who is affected by CVE-2026-23608?
CVE-2026-23608 affects all versions of GFI MailEssentials AI prior to 22.4.
What component of GFI MailEssentials AI is vulnerable in CVE-2026-23608?
CVE-2026-23608 specifically impacts the Mail Monitoring rule creation endpoint.