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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,22.4)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "MailEssentials AI", "source": "cna", "vendor": "GFI Software"}, "product": "mailessentials_ai", "vendor": "gfi"}], "analysis": {"en": {"generated_at": "2026-04-16T16:51:06.233502+00:00", "value": {"mitigation_remediation": ["Apply the official patch by upgrading to GFI MailEssentials AI version 22.4 or later.", "Remove or sanitize any existing IP Exception descriptions that contain embedded scripts when performing the upgrade to ensure no malicious content remains stored.", "Review user accounts that have permission to edit IP Exceptions and enforce least\u2011privilege policies to limit potential exploitation paths."], "summary": {"action": "Immediate Patch", "impact": "Stored XSS enabling script execution as an authenticated user"}, "threat_synthesis": {"affected_systems": "GFI Software\u2019s MailEssentials AI product, versions prior to 22.4, is affected. This includes all releases before the 22.4 update, which introduced a fix for the XSS vulnerability in the IP Exceptions description field.", "description_and_impact": "The vulnerability is a stored cross\u2011site scripting flaw in the Sender Policy Framework IP Exceptions interface of GFI MailEssentials AI. An authenticated user can submit malicious HTML or JavaScript via the ctl00$ContentPlaceHolder1$pv2$txtIPDescription parameter, which is saved and subsequently rendered in the management console. When a user later views the page, the stored script runs in the context of that logged\u2011in session, allowing the attacker to steal credentials, hijack the session, or run arbitrary code within the application\u2019s environment.", "risk_and_exploitability": "The CVSS score of 5.1 indicates a medium severity, and the EPSS score of less than 1% shows a very low current exploitation probability. Because the flaw requires authenticated access to the IP Exceptions interface, the attack vector is presumed to be an internal or compromised user possessing management privileges; it is not publicly exploitable without credentials. The vulnerability is not listed in the CISA KEV catalog, suggesting no known widespread attacks. Nonetheless, any organization running an affected version should consider the risk significant enough to warrant timely remediation."}}}}, "created": "2026-02-20T10:06:05.687104+00:00", "updated": "2026-04-16T17:00:09.369835+00:00", "vendors": ["gfi", "gfi$PRODUCT$mailessentials_ai"]}