CVE-2026-32852
Reflected XSS in MailEnable Webmail Allows Remote Code Execution
Publication date: 2026-03-23
Last updated on: 2026-03-30
Assigner: VulnCheck
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| mailenable | mailenable | to 10.55 (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?
[{'type': 'paragraph', 'content': 'CVE-2026-32852 is a reflected cross-site scripting (XSS) vulnerability found in MailEnable versions prior to 10.55. It occurs in the webmail interface, specifically through the StartDate parameter in the FreeBusy.aspx page.'}, {'type': 'paragraph', 'content': "The vulnerability arises because the StartDate parameter is not properly sanitized before being embedded into dynamically generated JavaScript. This allows remote attackers to craft malicious URLs that inject and execute arbitrary JavaScript code in a victim's browser."}, {'type': 'paragraph', 'content': 'This type of vulnerability is classified under CWE-79, which involves improper neutralization of input during web page generation.'}] [1]
How can this vulnerability impact me? :
This vulnerability allows remote attackers to execute arbitrary JavaScript in the browsers of users who click on a maliciously crafted URL.
The impact includes potential user interaction-based attacks such as session hijacking, theft of sensitive information, or performing actions on behalf of the user within the webmail interface.
The CVSS v4 base score of 5.1 indicates a moderate severity with low attack complexity and no privileges required, but user interaction is necessary.
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?
[{'type': 'paragraph', 'content': 'This vulnerability can be detected by identifying attempts to access the FreeBusy.aspx page with a StartDate parameter containing suspicious or malicious JavaScript code. Monitoring web server logs for URLs that include the StartDate parameter with unusual or encoded script content may indicate exploitation attempts.'}, {'type': 'paragraph', 'content': 'A practical approach is to search your web server access logs for requests to FreeBusy.aspx that include the StartDate parameter. For example, using command-line tools like grep:'}, {'type': 'list_item', 'content': "grep -i 'FreeBusy.aspx' /path/to/access.log | grep 'StartDate='"}, {'type': 'paragraph', 'content': 'Further inspection of these entries for suspicious payloads such as encoded JavaScript or script tags can help detect exploitation attempts.'}] [1]
What immediate steps should I take to mitigate this vulnerability?
The immediate step to mitigate this vulnerability is to upgrade MailEnable to version 10.55 or later, where the issue has been fixed.
Until the upgrade can be applied, consider implementing web application firewall (WAF) rules to block or sanitize requests containing suspicious StartDate parameter values to prevent malicious script injection.
Additionally, educating users to avoid clicking on suspicious links and monitoring for unusual activity related to the FreeBusy.aspx page can help reduce risk.