CVE-2026-44400
Full vulnerability record from the local CVENow database.
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.
Severity
HIGH
CVSS score
8.7
(v4.0)
Vulnerability status
Analyzed
Source identifier
Published
2026-05-08 21:16:28.260000
Last modified
2026-10-26 18:10:00.173000
View original CVE JSON
{
"id": "CVE-2026-44400",
"sourceIdentifier": "[email protected]",
"published": "2026-05-08T21:16:28.260",
"lastModified": "2026-10-26T18:10:00.173",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "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."
},
{
"lang": "es",
"value": "MailEnable Enterprise Premium 10.55 y versiones anteriores contiene una vulnerabilidad de autorización inadecuada en el portal móvil de WebAdmin que permite a los atacantes eludir las comprobaciones de autenticación al reutilizar las cookies AuthenticationToken generadas para usuarios con pocos privilegios. Los atacantes pueden obtener un token del endpoint de inicio de sesión de WebMail utilizando el parámetro PersistentLogin y reproducirlo contra el portal de WebAdmin para realizar acciones administrativas con altos privilegios."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "MailEnable",
"product": "MailEnable Enterprise Premium",
"defaultStatus": "unaffected",
"versions": [
{
"version": "0",
"lessThanOrEqual": "10.55",
"versionType": "custom",
"status": "affected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV40": [
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"source": "[email protected]",
"type": "Secondary",
"cvssData": {
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"vectorString": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"baseScore": 8.7,
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"attackVector": "NETWORK",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
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"exploitMaturity": "NOT_DEFINED",
"confidentialityRequirement": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"availabilityRequirement": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
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"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"valueDensity": "NOT_DEFINED",
"vulnerabilityResponseEffort": "NOT_DEFINED",
"providerUrgency": "NOT_DEFINED"
}
}
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{
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"type": "Primary",
"cvssData": {
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"ssvcV203": [
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"description": [
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"value": "CWE-639"
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"configurations": [
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"references": [
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"url": "https://www.mailenable.com/Premium-ReleaseNotes.txt",
"source": "[email protected]",
"tags": [
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},
{
"url": "https://www.vulncheck.com/advisories/mailenable-enterprise-premium-authorization-bypass-via-webadmin",
"source": "[email protected]",
"tags": [
"Third Party Advisory"
]
}
]
}