Critical severity · published Oct 7, 2026
CVE-2026-96408
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…
9.4
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 36% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MT
Movable Type · Six Apart Ltd.
9.0.0 through 9.0.9; 8.8.0 through 8.8.5; 8.0.0 through 8.0.12 · source: vendor
MT
Movable Type Cloud Edition · Six Apart Ltd.
9.2.0 through 9.2.1 · source: vendor
MT
Movable Type Premium · Six Apart Ltd.
9.0.0 through 9.0.9; 2.0 through 2.17 · source: vendor
MT
Movable Type Premium Cloud Edition · Six Apart Ltd.
9.2.0 through 9.2.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-96408
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-96408
movabletype.org
https://movabletype.org/news/2026/10/mt-930-released.html
www.sixapart.jp
https://www.sixapart.jp/movabletype/news/2026/10/07-1100.html
jvn.jp
https://jvn.jp/en/jp/JVN91153973/
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