CVE-2025-34407
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-12-09

Last updated on: 2025-12-09

Assigner: VulnCheck

Description
MailEnable versions prior to 10.54 contain a reflected cross-site scripting (XSS) vulnerability in the theme parameter of /Mondo/lang/sys/Forms/Statistics.aspx. The theme value is insufficiently sanitized when processed via a GET request and is reflected in the response, allowing an attacker to break out of an existing iframe context and inject arbitrary script. A remote attacker can supply a crafted payload that closes the iframe tag, inserts attacker-controlled JavaScript, and comments out remaining code, leading to script execution in a victim’s browser when the victim visits a malicious link. Successful exploitation can redirect victims to malicious sites, steal non-HttpOnly cookies, inject arbitrary HTML or CSS, and perform actions as the authenticated user.
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2025-12-09
Last Modified
2025-12-09
Generated
2026-06-16
AI Q&A
2025-12-10
EPSS Evaluated
2026-06-15
NVD
CVE-2025-34407
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
mailenable mailenable *
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
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 Quick Actions
Instant insights powered by AI
Detection Guidance

This vulnerability can be detected by testing the 'theme' parameter of the /Mondo/lang/sys/Forms/Statistics.aspx page for reflected cross-site scripting (XSS). You can perform a GET request with a crafted payload in the 'theme' parameter that attempts to break out of the iframe and inject JavaScript. For example, using curl or a browser-based tool, you can send a request like: curl -v "http://<target>/Mondo/lang/sys/Forms/Statistics.aspx?theme=</iframe><script>alert(1)</script><!--" and observe if the script is reflected and executed in the response. Monitoring web server logs for suspicious GET requests with unusual or encoded payloads in the 'theme' parameter can also help detect attempts to exploit this vulnerability. [2]

Executive Summary

This vulnerability is a reflected cross-site scripting (XSS) issue in MailEnable versions prior to 10.54. It occurs in the theme parameter of the /Mondo/lang/sys/Forms/Statistics.aspx page. The theme parameter is not properly sanitized when processed via a GET request, allowing an attacker to inject malicious JavaScript by breaking out of an existing iframe context. When a victim visits a crafted malicious link, the attacker's script executes in the victim's browser.

Impact Analysis

Exploitation of this vulnerability can lead to several impacts: attackers can redirect victims to malicious websites, steal non-HttpOnly cookies, inject arbitrary HTML or CSS, and perform actions on behalf of the authenticated user. This can compromise user data, session integrity, and potentially lead to further attacks on the victim or the system.

Mitigation Strategies

The immediate mitigation step is to upgrade MailEnable to version 10.54 or later, where this reflected XSS vulnerability in the 'theme' parameter has been fixed. Additionally, you should implement input validation and sanitization on the 'theme' parameter to prevent injection of malicious scripts. Applying security best practices such as enforcing secure cookies, restricting iframe usage, and monitoring for suspicious activity can also help reduce risk until the update is applied. [2, 3]

Chat Assistant
Ask questions about this CVE
Hi! I’m here to help you understand CVE-2025-34407. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70
EPSS Chart