GFI MailEssentials AI up to 22.3 Management Interface AntiSpoofing.aspx cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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4.4$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in GFI MailEssentials AI up to 22.3. This issue affects some unknown processing of the file /MailEssentials/pages/MailSecurity/AntiSpoofing.aspx of the component Management Interface. Such manipulation of the argument ctl00$ContentPlaceHolder1$AntiSpoofingGeneral1$TxtSmtpDesc leads to cross site scripting. This vulnerability is listed as CVE-2026-23616. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in GFI MailEssentials AI up to 22.3. Affected by this issue is an unknown code block of the file /MailEssentials/pages/MailSecurity/AntiSpoofing.aspx of the component Management Interface. The manipulation of the argument ctl00$ContentPlaceHolder1$AntiSpoofingGeneral1$TxtSmtpDesc with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to 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. Impacted is integrity. CVE summarizes:

GFI MailEssentials AI versions prior to 22.4 contain a stored cross-site scripting vulnerability in the Anti-Spoofing configuration page. An authenticated user can supply HTML/JavaScript in the ctl00$ContentPlaceHolder1$AntiSpoofingGeneral1$TxtSmtpDesc parameter to /MailEssentials/pages/MailSecurity/AntiSpoofing.aspx, which is stored and later rendered in the management interface, allowing script execution in the context of a logged-in user.

The weakness was presented by Alex Williams. The advisory is shared for download at gfi.ai. This vulnerability is handled as CVE-2026-23616 since 01/14/2026. The exploitation is known to be easy. The attack may be launched remotely. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

By approaching the search of inurl:MailEssentials/pages/MailSecurity/AntiSpoofing.aspx it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 22.4 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.4
CNA Vector (VulnCheck): 🔒

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Google Hack: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: MailEssentials AI 22.4

Timelineinfo

01/14/2026 CVE reserved
02/19/2026 +36 days Advisory disclosed
02/19/2026 +0 days VulDB entry created
02/19/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: gfi.ai
Researcher: Alex Williams
Status: Confirmed

CVE: CVE-2026-23616 (🔒)
GCVE (CVE): GCVE-0-2026-23616
GCVE (VulDB): GCVE-100-346988

Entryinfo

Created: 02/19/2026 21:54
Changes: 02/19/2026 21:54 (80)
Complete: 🔍
Cache ID: 216::103

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