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Description

GFI MailEssentials AI versions prior to 22.4 contain a stored cross-site scripting vulnerability in the Mail Monitoring rule creation endpoint. An authenticated user can supply HTML/JavaScript in the JSON \"name\" field to /MailEssentials/pages/MailSecurity/MailMonitoring.aspx/Save, which is stored and later rendered in the management interface, allowing script execution in the context of a logged-in user.

PUBLISHED Reserved 2026-01-14 | Published 2026-02-19 | Updated 2026-02-20 | Assigner VulnCheck




MEDIUM: 5.1CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

MEDIUM: 5.4CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Problem types

CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')

Product status

Default status
unaffected

Any version before 22.4
affected

Credits

Alex Williams from Pellera Technologies finder

VulnCheck coordinator

References

gfi.ai/...ssentials/resources/documentation/product-releases release-notes patch

www.vulncheck.com/...agement-mail-monitoring-rule-stored-xss third-party-advisory

cve.org (CVE-2026-23608)

nvd.nist.gov (CVE-2026-23608)

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