CVE-2026-23607
Stored XSS in GFI MailEssentials Anti-Spam Whitelist Interface
Publication date: 2026-02-19
Last updated on: 2026-02-20
Assigner: VulnCheck
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| gfi | mailessentials | to 22.4 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-79 | The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
GFI MailEssentials AI versions prior to 22.4 contain a stored cross-site scripting (XSS) vulnerability in the Anti-Spam Whitelist management interface.
An authenticated user can input HTML or JavaScript code into a specific parameter (ctl00$ContentPlaceHolder1$pv1$txtDescription) on the Whitelist.aspx page.
This malicious code is stored and later executed in the context of a logged-in user when the management interface renders it, allowing script execution within the application.
How can this vulnerability impact me? :
This vulnerability allows an authenticated user to execute arbitrary scripts within the management interface of GFI MailEssentials AI.
Such script execution can lead to unauthorized actions being performed on behalf of the logged-in user, potentially compromising the integrity and security of the system.
It may enable attackers to steal session tokens, manipulate data, or perform other malicious activities within the context of the affected application.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know