CVE-2026-23617: GFI MailEssentials AI < 22.4 Anti-Spam Spam Keyword Checking Body Condition Stored XSS
GFI MailEssentials AI versions prior to 22.4 contain a stored cross-site scripting vulnerability in the Spam Keyword Checking (Body) conditions interface. An authenticated user can supply HTML/JavaScript in the ctl00$ContentPlaceHolder1$pvGeneral$TXBCondition parameter to /MailEssentials/pages/MailSecurity/ASKeywordChecking.aspx, 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-2026-23617?
CVE-2026-23617 is classified as a high severity stored cross-site scripting vulnerability.
How do I fix CVE-2026-23617?
To fix CVE-2026-23617, update GFI MailEssentials AI to version 22.4 or later.
Who is affected by CVE-2026-23617?
CVE-2026-23617 affects users of GFI MailEssentials AI versions prior to 22.4.
What type of vulnerability is CVE-2026-23617?
CVE-2026-23617 is a stored cross-site scripting vulnerability found in the Spam Keyword Checking conditions interface.
What could an attacker exploit in CVE-2026-23617?
An authenticated user can exploit CVE-2026-23617 to execute HTML/JavaScript in the affected parameter.