CVE-2026-23618

MEDIUM

5.4

Description

GFI MailEssentials AI versions prior to 22.4 contain a stored cross-site scripting vulnerability in the Spam Keyword Checking (Subject) conditions interface. An authenticated user can supply HTML/JavaScript in the ctl00$ContentPlaceHolder1$pvSubject$TXB_SubjectCondition 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.

CVE Details

CVSS v3.1 Score5.4

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionREQUIRED

Published2/19/2026

Last Modified2/20/2026

Sourcenvd

Honeypot Sightings0

Affected Products

gfi:mailessentials

Weaknesses (CWE)

CWE-79

References

https://gfi.ai/products-and-solutions/network-security-solutions/mailessentials/resources/documentation/product-releases(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/gfi-mailessentials-ai-anti-spam-spam-keyword-checking-subject-condition-stored-xss(disclosure@vulncheck.com)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.