CVE-2026-33088: Movable Type provided by Six Apart Ltd

Critical severity · published Apr 8, 2026

CVE-2026-33088

Movable Type provided by Six Apart Ltd

9.8

CVSS

0.3%

EPSS

On KEV

Description

Movable Type provided by Six Apart Ltd. contains an SQL Injection vulnerability which may allow an attacker to execute an arbitrary SQL statement.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

None

Confidentiality

High

Integrity

High

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)0.3% · higher than 28% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Movable Type · Six Apart Ltd.

9.1.0 and earlier; 9.0.6 and earlier; 8.8.2 and earlier; 8.0.9 and earlier; 5.1 to 5.18; 5.2; +6 more · source: vendor, NVD

Movable Type Advanced · Six Apart Ltd.

9.1.0 and earlier; 9.0.6 and earlier; 8.8.2 and earlier; 8.0.9 and earlier · source: vendor

Movable Type Premium · Six Apart Ltd.

9.1.0 and earlier; 9.0.6 and earlier; 2.14 and earlier · source: vendor

Movable Type Premium (MT8-based) · Six Apart Ltd.

2.14 and earlier · source: vendor

Movable Type Premium Advanced Edition · Six Apart Ltd.

9.1.0 and earlier; 9.0.6 and earlier; 2.14 and earlier · source: vendor

Affected product

Movable Type

Six Apart Ltd.

All Movable Type CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-33088

CVE.org

https://www.cve.org/CVERecord?id=CVE-2026-33088

Third Party Advisory

https://jvn.jp/en/jp/JVN66473735/

Vendor Advisory

https://movabletype.org/news/2026/04/mt-907-released.html

Vendor Advisory

https://www.sixapart.jp/movabletype/news/2026/04/08-1100.html