CVE-2026-24447
Medium
Description
If a malformed data is input to the affected product, a CSV file downloaded from the affected product may contain such malformed data. When a victim user download and open such a CSV file, the embedded code may be executed in the user's environment. Note that Movable Type 7 series and 8.4 series, which are End-of-Life (EOL), are affected by the vulnerability as well.
SeverityMedium
CVSS4.8
Exploit probability—
ProductMovable Type (Software Edition)
PublishedFeb 4, 2026
First seenFeb 4, 2026
Weakness typeCWE-1236CWE-1236
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 (Software Edition) | 9.0.4 to 9.0.5 (9.0 series), 8.8.0 to 8.8.1 (8.8 series), 8.0.2 to 8.0.8 (8.0 series) | — |
| Six Apart Ltd. Movable Type Advanced (Software Edition) | 9.0.4 to 9.0.5 (9.0 series), 8.8.0 to 8.8.1 (8.8 series), 8.0.2 to 8.0.8 (8.0 series) | — |
| Six Apart Ltd. Movable Type Premium (Software Edition) | 9.0.4 (MTP 9.0 series), 2.13 and earlier (MTP 2 series) | — |
| Six Apart Ltd. Movable Type Premium (Advanced Edition) (Software Edition) | 9.0.4 (MTP 9.0 series), 2.13 and earlier (MTP 2 series) | — |
| Six Apart Ltd. Movable Type (Cloud Edition) | 9.0.5 (9 series), 8.8.1 (8 series) | — |
| Six Apart Ltd. Movable Type Premium (Cloud Edition) | 9.0.5 (9 series), 2.12 (MTP 2 series) | — |
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