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CVE-2026-96408

• Severity: critical (CVSS 9.3 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-07 · updated 2026-10-07
• Weakness: CWE-94

Description

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.

Affected products

• Six Apart Ltd. Movable Type: from 9.0.0 through 9.0.9; from 8.8.0 through 8.8.5; from 8.0.0 through 8.0.12
• Six Apart Ltd. Movable Type (Cloud Edition): from 9.2.0 through 9.2.1
• Six Apart Ltd. Movable Type Premium: from 9.0.0 through 9.0.9; from 2.0 through 2.17
• Six Apart Ltd. Movable Type Premium (Cloud Edition): from 9.2.0 through 9.2.1

References

• https://jvn.jp/en/jp/JVN91153973/
• https://movabletype.org/news/2026/10/mt-930-released.html
• https://www.sixapart.jp/movabletype/news/2026/10/07-1100.html

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