CVE-2026-23616
Stored XSS in GFI MailEssentials Anti-Spoofing Configuration
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?
This vulnerability is a stored cross-site scripting (XSS) issue found in GFI MailEssentials AI versions prior to 22.4. It occurs on the Anti-Spoofing configuration page where an authenticated user can input HTML or JavaScript code into a specific parameter. This malicious code is then stored and later executed within the management interface when viewed by a logged-in user, allowing script execution in their context.
How can this vulnerability impact me? :
The impact of this vulnerability includes the potential for an attacker with authenticated access to execute arbitrary scripts within the management interface. This can lead to unauthorized actions performed on behalf of the logged-in user, theft of sensitive information, session hijacking, or further compromise of the system.
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