CVE-2026-23613

MEDIUM 5.4

GFI MailEssentials AI < 22.4 Anti-Spam URI DNS Blocklist Domain Stored XSS

CVSS Score

5.4

EPSS Score

0.0%

EPSS Percentile

0th

GFI MailEssentials AI versions prior to 22.4 contain a stored cross-site scripting vulnerability in the URI DNS Blocklist configuration page. An authenticated user can supply HTML/JavaScript in the ctl00$ContentPlaceHolder1$pv1$TXB_URIs parameter to /MailEssentials/pages/MailSecurity/uridnsblocklist.aspx, which is stored and later rendered in the management interface, allowing script execution in the context of a logged-in user.

CWE	CWE-79
Vendor	gfi software
Product	mailessentials ai
Published	Feb 19, 2026
Last Updated	Mar 2, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

GFI Software / MailEssentials AI

0 < 22.4

References

NVD ↗ CVE.org ↗ EPSS Data ↗

gfi.ai: https://gfi.ai/products-and-solutions/network-security-solutions/mailessentials/resources/documentation/product-releases vulncheck.com: https://www.vulncheck.com/advisories/gfi-mailessentials-ai-anti-spam-uri-dns-blocklist-domain-stored-xss

Credits

Alex Williams from Pellera Technologies VulnCheck