CVE-2026-44400

MailEnable Enterprise Premium < 10.55 Authorization Bypass via WebAdmin

Published May 8, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Description
MailEnable Enterprise Premium 10.55 and earlier contains an improper authorization vulnerability in the WebAdmin mobile portal that allows attackers to bypass authentication checks by reusing AuthenticationToken cookies generated for low-privileged users. Attackers can obtain a token from the WebMail login endpoint using the PersistentLogin parameter and replay it against the WebAdmin portal to perform highly privileged administrative actions.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:mailenable:mailenable:*:*:*:*:*:*:*:*
Type Values Removed Values Added
First Time appeared Mailenable mailenable
CPEs cpe:2.3:a:mailenable:mailenable:*:*:*:*:enterprise_premium:*:*:*
Vendors & Products Mailenable mailenable
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Mailenable
Mailenable mailenable Enterprise
Vendors & Products Mailenable
Mailenable mailenable Enterprise
Type Values Removed Values Added
Description MailEnable Enterprise Premium 10.55 and earlier contains an improper authorization vulnerability in the WebAdmin mobile portal that allows attackers to bypass authentication checks by reusing AuthenticationToken cookies generated for low-privileged users. Attackers can obtain a token from the WebMail login endpoint using the PersistentLogin parameter and replay it against the WebAdmin portal to perform highly privileged administrative actions.
Title MailEnable Enterprise Premium < 10.55 Authorization Bypass via WebAdmin
Weaknesses CWE-639
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Jul 14, 2026, 8:01 PM
Reserved
May 5, 2026, 9:38 PM
Status
Analyzed
Published
May 8, 2026, 9:16 PM
Modified
Oct 26, 2026, 6:10 PM