CVE-2026-96408
Critical
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.
SeverityCritical
CVSS9.3
Exploit probability—
Product
Movable Type Cloud Edition
PublishedOct 7, 2026
First seenOct 7, 2026
Weakness typeCWE-94Code injection
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Six Apart Ltd. Movable Type Cloud Edition | 9.2.0 ≤ v ≤ 9.2.1 | — |
| Six Apart Ltd. Movable Type | 9.0.0 ≤ v ≤ 9.0.9, 8.8.0 ≤ v ≤ 8.8.5, 8.0.0 ≤ v ≤ 8.0.12 | — |
| Six Apart Ltd. Movable Type Premium Cloud Edition | 9.2.0 ≤ v ≤ 9.2.1 | — |
| Six Apart Ltd. Movable Type Premium | 9.0.0 ≤ v ≤ 9.0.9, 2.0 ≤ v ≤ 2.17 | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.