TI-2026-19018 Aliases CVE-2026-23617 GHSA-wmpp-2v6j-mq33

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

LOW 23CWE-79Published 2026-02-19 · Updated 2026-05-14

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Passive
Attack complexity: Low
Attack requirements: None
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00206 10th percentileScored 2026-11-07

Fix Fixed MailEssentials AI (GFI Software): 22.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
GFI Software	MailEssentials AI	before 22.4	22.4	Patch available	CNA

MailEssentials AI VendorGFI Software Affected before 22.4 Fixed in 22.4 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:gfi:mailessentials::::::::	before 22.4	Vulnerable	GFI Software

cpe:2.3:a:gfi:mailessentials:*:*:*:*:*:*:*:* Versions before 22.4 Vulnerable ·GFI Software

Remediation

Fix · CNA MailEssentials AI (GFI Software) Fixed in 22.4

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2026-02-19
GFI Software MailEssentials AI 22.4
18 records Highest priority Priority LOW 18 LOW
Other records, highest priority first
- TI-2026-19022 GFI MailEssentials AI < 22.4 ListServer.IsPathExist() Absolute Directory Traversal to File EnumerationPriority LOW 24
- TI-2026-19021 GFI MailEssentials AI < 22.4 ListServer.IsDBExist() Absolute Directory Traversal to File EnumerationPriority LOW 23
- TI-2026-19020 GFI MailEssentials AI < 22.4 General Settings Local Domains Domain Description Stored XSSPriority LOW 23
Show all 18 records →

Timeline

2026-10-02 Threatist record created from CVE-2026-23617
2026-10-03 Alias added: GHSA-wmpp-2v6j-mq33

References

Patch 1

https://gfi.ai/products-and-solutions/network-security-solutions/mailessentials/resources/documentation/product-releases

TI-2025-24524 GFI MailEssentials < 21.8 MultiNode Insecure Deserialization CVSS 3.1HIGH 8.8
TI-2025-24522 GFI MailEssentials < 21.8 Local Privilege Escalation CVSS 3.1HIGH 7.8
TI-2004-01190 A bug in the HTML parser in a certain Microsoft HTML library, as used in various third… CVSS 2.0HIGH 10.0
TI-2025-24523 GFI MailEssentials < 21.8 XXE Arbitrary File Read CVSS 3.1MEDIUM 6.5
TI-2026-19022 GFI MailEssentials AI < 22.4 ListServer.IsPathExist() Absolute Directory Traversal to File Enumeration CVSS 4.0MEDIUM 5.3
TI-2026-19021 GFI MailEssentials AI < 22.4 ListServer.IsDBExist() Absolute Directory Traversal to File Enumeration CVSS 4.0MEDIUM 5.3

See all 21 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences