CVE-2026-44400

MailEnable Enterprise Premium < 10.55 Authorization Bypass via WebAdmin

State: Published
Severity: 8.7 High
Published: May 8, 2026
Updated: Jul 14, 2026
Reserved: May 5, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	8.7 High	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	VulnCheck
3.1	8.1 High	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	VulnCheck

Weaknesses

CWE-639 Authorization Bypass Through User-Controlled Key

Affected Products

Product	Versions
MailEnable Enterprise PremiumMailEnable	10.55 and earlierAffected

References

https://www.mailenable.com/Premium-ReleaseNotes.txtrelease-notes
https://www.vulncheck.com/advisories/mailenable-enterprise-premium-authorization-bypass-via-webadminthird-party-advisory

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.