CVE-2025-34402 Details
Description
MailEnable versions prior to 10.54 contain a reflected cross-site scripting (XSS) vulnerability in the FieldCc parameter of /Mondo/lang/sys/Forms/AddressBook.aspx. The FieldCc value is not properly sanitized when processed via a GET request and is reflected inside a <script> block in the JavaScript variable var CCFieldProvided. By supplying a crafted payload that terminates the existing LoadCurAddresses() function, inserts attacker-controlled script, and comments out remaining code, a remote attacker can execute arbitrary JavaScript in a victim’s browser when the victim attempts to send an email. Successful exploitation can redirect victims to malicious sites, steal non-HttpOnly cookies, inject arbitrary HTML or CSS, and perform actions as the authenticated user.
A reflected cross-site scripting vulnerability has been identified in MailEnable versions prior to 10.54. The issue resides in the FieldCc parameter of the AddressBook.aspx page. The vulnerability arises because the FieldCc value is not adequately sanitized when processed through a GET request. This unsanitized input is reflected within a <script> block in a JavaScript variable, allowing remote attackers to execute arbitrary JavaScript in the context of the victim's browser. Exploitation of this vulnerability could occur when the victim attempts to send an email, potentially leading to redirection to malicious sites, theft of non-HttpOnly cookies, injection of arbitrary HTML or CSS, and execution of actions as the authenticated user.
Users are advised to update to MailEnable version 10.54 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Dec 9, 2025References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://mailenable.com/Standard-ReleaseNotes.txt | [email protected] | Release Notes |
| https://www.mailenable.com/ | [email protected] | Product |
| https://www.vulncheck.com/advisories/mailenable-reflected-xss-in-fieldcc-parameter-of-addressbook-aspx | [email protected] | Third Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| mailenable mailenable | < 10.54 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Dec 9, 2025 | Initial Analysis | [email protected] |
| Dec 9, 2025 | New CVE Received | [email protected] |