MailEnable Auth Cleartext Storage Information Disclosure Vulnerability

October 27th, 2026
ZDI-26-810 ZDI-CAN-34478

CVE ID

CVE-2026-114551

CVSS Score

5.9 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Vendors

MailEnable

Affected Products

MailEnable

Vulnerability Details

This vulnerability allows remote attackers to disclose sensitive information on affected installations of MailEnable. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the handling of mailbox credentials. The issue results from storing sensitive information in plaintext. An attacker can leverage this in conjunction with other vulnerabilities to disclose stored credentials, leading to further compromise.

Additional Details

Fixed in version 10.60
https://www.mailenable.com/Premium-ReleaseNotes.txt


Disclosure Timeline

  • 2026-09-18 - Vulnerability reported to vendor
  • 2026-10-27 - Coordinated public release of advisory
  • 2026-10-27 - Advisory Updated

Credit

Nicolas Chatelain

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