CVE-2026-44392

Missing Authorization Allows Unintended Updates in Movable Type

Published May 20, 2026 CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
Description
Missing authorization vulnerability exists in Movable Type. Under certain conditions, when a user without administrator privileges signs in to the product, unintended update processing may be executed.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
First Time appeared Six Apart
Six Apart movable Type
Six Apart movable Type Advanced
Six Apart movable Type Premium
Six Apart movable Type Premium Advanced Edition
Vendors & Products Six Apart
Six Apart movable Type
Six Apart movable Type Advanced
Six Apart movable Type Premium
Six Apart movable Type Premium Advanced Edition
Type Values Removed Values Added
Title Missing Authorization Allows Unintended Updates in Movable Type
Type Values Removed Values Added
Description Missing authorization vulnerability exists in Movable Type. Under certain conditions, when a user without administrator privileges signs in to the product, unintended update processing may be executed.
Weaknesses CWE-862
References
Metrics cvssV3_0

{'score': 4.3, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
jpcert
Published
Updated
May 20, 2026, 1:04 PM
Reserved
May 18, 2026, 5:54 AM
Status
Deferred
Published
May 20, 2026, 7:16 AM
Modified
Jul 24, 2026, 10:10 AM