---
id: CVE-2026-96408
title: >-
  A code injection vulnerability exists in the upgrade script of Movable Type,
  which may allow an unauthenticated attacker to execute an arbitrary Perl
  script or an SQL query on the affected product.
summary: >-
  A code injection vulnerability exists in the upgrade script of Movable Type,
  which may allow an unauthenticated attacker to execute an arbitrary Perl
  script or an SQL query on the affected product.
severity: critical
cvss: 9.4
cvssVector: 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L'
cwe:
  - CWE-94
vendor: Six Apart Ltd.
product: Movable Type Cloud Edition
affected:
  - movable_type_cloud_edition >= 9.2.0 <= 9.2.1
  - movable_type >= 9.0.0 <= 9.0.9
  - movable_type >= 8.8.0 <= 8.8.5
  - movable_type >= 8.0.0 <= 8.0.12
  - movable_type_premium_cloud_edition >= 9.2.0 <= 9.2.1
  - movable_type_premium >= 9.0.0 <= 9.0.9
  - movable_type_premium >= 2.0 <= 2.17
published: '2026-10-07'
updated: '2026-10-07'
sourceUpdated: '2026-10-07T11:17:20.620'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-96408'
references:
  - url: 'https://jvn.jp/en/jp/JVN91153973/'
    label: vultures@jpcert.or.jp
  - url: 'https://movabletype.org/news/2026/10/mt-930-released.html'
    label: vultures@jpcert.or.jp
  - url: 'https://www.sixapart.jp/movabletype/news/2026/10/07-1100.html'
    label: vultures@jpcert.or.jp
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-07T11:26:47.656Z'
---

## Overview

A code injection vulnerability exists in the upgrade script of Movable Type, which may allow an unauthenticated attacker to execute an arbitrary Perl script or an SQL query on the affected product.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.