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CVE Vulnerability Details :
CVE-2026-23604
PUBLISHED
More InfoOfficial Page
Assigner-VulnCheck
Assigner Org ID-83251b91-4cc7-4094-a5c7-464a1b83ea10
View Known Exploited Vulnerability (KEV) details
Published At-19 Feb, 2026 | 17:54
Updated At-19 Feb, 2026 | 19:21
Rejected At-
▼CVE Numbering Authority (CNA)
GFI MailEssentials AI < 22.4 Keyword Filtering Rule Stored XSS

GFI MailEssentials AI versions prior to 22.4 contain a stored cross-site scripting vulnerability in the Keyword Filtering rule creation workflow. An authenticated user can supply HTML/JavaScript in the ctl00$ContentPlaceHolder1$pv1$TXB_RuleName parameter to /MailEssentials/pages/MailSecurity/contentchecking.aspx, which is stored and later rendered in the management interface, allowing script execution in the context of a logged-in user.

Affected Products
Vendor
GFI Software
Product
MailEssentials AI
Default Status
unaffected
Versions
Affected
  • From 0 before 22.4 (semver)
Problem Types
TypeCWE IDDescription
CWECWE-79CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
Type: CWE
CWE ID: CWE-79
Description: CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
Metrics
VersionBase scoreBase severityVector
4.05.1MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
3.15.4MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Version: 4.0
Base score: 5.1
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
Version: 3.1
Base score: 5.4
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
finder
Alex Williams from Pellera Technologies
coordinator
VulnCheck
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://gfi.ai/products-and-solutions/network-security-solutions/mailessentials/resources/documentation/product-releases
release-notes
patch
https://www.vulncheck.com/advisories/gfi-mailessentials-ai-keyword-filtering-rule-stored-xss
third-party-advisory
Hyperlink: https://gfi.ai/products-and-solutions/network-security-solutions/mailessentials/resources/documentation/product-releases
Resource:
release-notes
patch
Hyperlink: https://www.vulncheck.com/advisories/gfi-mailessentials-ai-keyword-filtering-rule-stored-xss
Resource:
third-party-advisory
Details not found