Reflected Cross-Site Scripting Vulnerability in MailEnable Webmail Interface
CVE-2026-32852

5.1MEDIUM

Key Information:

Vendor

Mailenable

Status
Mailenable
Vendor
CVE Published:
23 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-32852?

A reflected cross-site scripting vulnerability exists in MailEnable versions prior to 10.55, affecting its webmail interface. This security flaw allows remote attackers to execute arbitrary JavaScript in a victim's browser. By crafting a malicious URL with an exploited StartDate parameter in the FreeBusy.aspx form, attackers can inject untrusted code due to improper sanitization, potentially compromising user data and privacy.

Affected Version(s)

MailEnable 0 < 10.55.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-32852 - Proof of Concept

References

https://www.mailenable.com/rss/article.asp?Source=RSSADMI...
vendor-advisorypatch
https://karmainsecurity.com/KIS-2026-05
technical-descriptionexploit
https://mailenable.com/Standard-ReleaseNotes.txt
release-notes

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Egidio Romano
.