CVE-2026-23617
MEDIUMCVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Lifecycle Timeline
2Tags
Description
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$TXB_Condition 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.
Analysis
GFI MailEssentials AI prior to version 22.4 is vulnerable to stored cross-site scripting in the Spam Keyword Checking interface, where authenticated users can inject malicious scripts that execute when administrators access the management console. An attacker with valid credentials can leverage this to perform actions on behalf of logged-in users or steal session information, affecting organizations using vulnerable versions of the product.
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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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External POC / Exploit Code
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