CVE-2026-23606— GFI MailEssentials AI < 22.4 Advanced Content Filtering Rule Stored XSS
Possible ATT&CK Techniques 2AI
T1059 · Command and Scripting Interpreter T1189 · Drive-by CompromiseAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| GFI Software | MailEssentials AI | < 22.4 | affected |
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I. Basic Information for CVE-2026-23606
Vulnerability Information
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Vulnerability Title
GFI MailEssentials AI < 22.4 Advanced Content Filtering Rule Stored XSS
Source: CVE Program / CVE List V5
Vulnerability Description
GFI MailEssentials AI versions prior to 22.4 contain a stored cross-site scripting vulnerability in the Advanced Content Filtering rule creation workflow. An authenticated user can supply HTML/JavaScript in the ctl00$ContentPlaceHolder1$pv1$txtRuleName parameter to /MailEssentials/pages/MailSecurity/advancedfiltering.aspx, which is stored and later rendered in the management interface, allowing script execution in the context of a logged-in user.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
GFI MailEssentials AI 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GFI MailEssentials AI是美国GFI开源的一个反垃圾邮件与数据泄露防护软件。 GFI MailEssentials AI 22.4之前版本存在安全漏洞，该漏洞源于高级内容过滤规则创建流程中存在存储型跨站脚本，可能导致在登录用户环境中执行脚本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| GFI Software | MailEssentials AI | 0 ~ 22.4 | - |
II. Public POCs for CVE-2026-23606
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-23606 (1)
Vendor Pages for CVE-2026-23606 (1)
Same Patch Batch · GFI Software · 2026-02-19 · 18 CVEs total
| CVE-2026-23611 | 5.4 MEDIUM | GFI MailEssentials AI < 22.4 Anti-Spam IP Blocklist Description Stored XSS |
| CVE-2026-23616 | 5.4 MEDIUM | GFI MailEssentials AI < 22.4 Anti-Spam Anti-Spoofing Description Stored XSS |
| CVE-2026-23608 | 5.4 MEDIUM | GFI MailEssentials AI < 22.4 Email Management Mail Monitoring Rule Stored XSS |
| CVE-2026-23605 | 5.4 MEDIUM | GFI MailEssentials AI < 22.4 Attachment Filtering Rule Stored XSS |
| CVE-2026-23607 | 5.4 MEDIUM | GFI MailEssentials AI < 22.4 Anti-Spam Whitelist Description Stored XSS |
| CVE-2026-23613 | 5.4 MEDIUM | GFI MailEssentials AI < 22.4 Anti-Spam URI DNS Blocklist Domain Stored XSS |
| CVE-2026-23609 | 5.4 MEDIUM | GFI MailEssentials AI < 22.4 General Settings Perimeter SMTP Servers Description Stored XS |
| CVE-2026-23614 | 5.4 MEDIUM | GFI MailEssentials AI < 22.4 Anti-Spam Sender Policy Framework IP Exceptions Description S |
| CVE-2026-23604 | 5.4 MEDIUM | GFI MailEssentials AI < 22.4 Keyword Filtering Rule Stored XSS |
| CVE-2026-23612 | 5.4 MEDIUM | GFI MailEssentials AI < 22.4 Anti-Spam IP DNS Blocklist Domain Stored XSS |
| CVE-2026-23619 | 5.4 MEDIUM | GFI MailEssentials AI < 22.4 General Settings Local Domains Domain Description Stored XSS |
| CVE-2026-23617 | 5.4 MEDIUM | GFI MailEssentials AI < 22.4 Anti-Spam Spam Keyword Checking Body Condition Stored XSS |
| CVE-2026-23615 | 5.4 MEDIUM | GFI MailEssentials AI < 22.4 Anti-Spam Sender Policy Framework Email Exceptions Descriptio |
| CVE-2026-23618 | 5.4 MEDIUM | GFI MailEssentials AI < 22.4 Anti-Spam Spam Keyword Checking Subject Condition Stored XSS |
| CVE-2026-23610 | 5.4 MEDIUM | GFI MailEssentials AI < 22.4 POP2Exchange POP3 Server Login Stored XSS |
| CVE-2026-23620 | 4.3 MEDIUM | GFI MailEssentials AI < 22.4 ListServer.IsDBExist() Absolute Directory Traversal to File E |
| CVE-2026-23621 | 4.3 MEDIUM | GFI MailEssentials AI < 22.4 ListServer.IsPathExist() Absolute Directory Traversal to File |
IV. Related Vulnerabilities
Same product: MailEssentials AI
- CVE-2026-23621
GFI MailEssentials AI < 22.4 ListServer.IsPathExist() Absolu - CVE-2026-23620
GFI MailEssentials AI < 22.4 ListServer.IsDBExist() Absolute - CVE-2026-23619
GFI MailEssentials AI < 22.4 General Settings Local Domains - CVE-2026-23618
GFI MailEssentials AI < 22.4 Anti-Spam Spam Keyword Checking - CVE-2026-23617
GFI MailEssentials AI < 22.4 Anti-Spam Spam Keyword Checking
Same vendor: GFI Software
- CVE-2026-48539
GFI Archiver < 15.13 Stored XSS via MailInsights.aspx - CVE-2026-48538
GFI Archiver < 15.13 Stored XSS via ImportSettingsWizard.ash - CVE-2026-48537
GFI Archiver < 15.13 Stored XSS via FileArchiveAssistantWiza - CVE-2026-48536
GFI Archiver < 15.13 Stored XSS via GeneralSettingsWizard.as - CVE-2026-48535
GFI Archiver < 15.13 Stored XSS via CallHomeSettingsWizard.a
Same weakness: CWE-79
- CVE-2026-19998
code-projects Online Shopping System offersmail.php cross si - CVE-2026-19995
Webkul Bagisto RMA Message send-message cross site scripting - CVE-2026-13424
Online Scheduling and Appointment Booking System <= 27.7 - U - CVE-2026-2357
Bold Page Builder <= 5.6.8 - Authenticated (Contributor+) St - CVE-2026-10734
Infility Global <= 2.15.21 - Unauthenticated Stored Cross-Si
V. Comments for CVE-2026-23606
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