CVE-2026-23617

GFI MailEssentials AI < 22.4 Anti-Spam Spam Keyword Checking Body Condition Stored XSS

MEDIUM
5.4
CVSS Score
Published: February 19, 2026 at 05:59 PM UTC
Updated: June 17, 2026 at 10:21 AM UTC
1 product affected across 1 vendorMailessentials

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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 22.4
Affected range stops below 22.4, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.4MEDIUMVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-79

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