MailEnable versions prior to 10.54 contain a reflected cross-site scripting (XSS) vulnerability in the InstanceScope parameter of /Mondo/lang/sys/Forms/CAL/compose.aspx. The InstanceScope value is not properly sanitized when processed via a GET request and is reflected inside a <script> block in the JavaScript variable var gInstanceScope. By supplying a crafted payload that terminates the existing PageLoad() function, inserts attacker-controlled script, and comments out remaining code, a remote attacker can execute arbitrary JavaScript in a victim’s browser. Successful exploitation can redirect victims to malicious sites, steal non-HttpOnly cookies, inject arbitrary HTML or CSS, and perform actions as the authenticated user.
References
| Link | Resource |
|---|---|
| https://mailenable.com/Standard-ReleaseNotes.txt | Release Notes |
| https://www.mailenable.com/ | Product |
| https://www.vulncheck.com/advisories/mailenable-reflected-xss-in-instancescope-parameter-of-cal-compose-aspx | Third Party Advisory |
Configurations
History
09 Dec 2025, 19:39
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:mailenable:mailenable:*:*:*:*:standard:*:*:* | |
| First Time |
Mailenable mailenable
Mailenable |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 6.1 |
| References | () https://mailenable.com/Standard-ReleaseNotes.txt - Release Notes | |
| References | () https://www.mailenable.com/ - Product | |
| References | () https://www.vulncheck.com/advisories/mailenable-reflected-xss-in-instancescope-parameter-of-cal-compose-aspx - Third Party Advisory |
09 Dec 2025, 18:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-12-09 18:15
Updated : 2025-12-09 19:39
NVD link : CVE-2025-34404
Mitre link : CVE-2025-34404
CVE.ORG link : CVE-2025-34404
JSON object : View
Products Affected
mailenable
- mailenable
CWE
CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')