CVE-2026-23618
Stored XSS in GFI MailEssentials AI Spam Keyword 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 have a stored cross-site scripting (XSS) vulnerability in the Spam Keyword Checking (Subject) conditions interface.
An authenticated user can input HTML or JavaScript code into a specific parameter (ctl00$ContentPlaceHolder1$pvSubject$TXB_SubjectCondition) on the ASKeywordChecking.aspx page.
This malicious code is stored and later displayed in the management interface, which causes the script to execute in the context of a logged-in user.
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 with the privileges of the logged-in user, potentially compromising the integrity and security 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