CVE-2025-54856
Medium
Description
Movable Type contains a stored cross-site scripting vulnerability in Edit ContentData page. If crafted input is stored by an attacker with "ContentType Management" privilege, an arbitrary script may be executed on the web browser of the user who accesses Edit ContentData page.
SeverityMedium
CVSS4.6
Exploit probability—
ProductMovable Type (Software Edition)
PublishedOct 23, 2025
First seenOct 23, 2025
Weakness typeCWE-79Cross-site scripting (XSS)
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) | 8.4.0 to 8.4.3 (8.4 series), 8.0.0 to 8.0.7 (8.0 series), 7 r.5509 and earlier (7 series) | — |
| Six Apart Ltd. Movable Type Advanced (Software Edition) | 8.4.0 to 8.4.3 (8.4 series), 8.0.0 to 8.0.7 (8.0 series), 7 r.5509 and earlier (7 series) | — |
| Six Apart Ltd. Movable Type Premium (Software Edition) | 2.10 and earlier (2 series), 1.67 and earlier (1 series) | — |
| Six Apart Ltd. Movable Type Premium (Advanced Edition) (Software Edition) | 2.10 and earlier (2 series), 1.67 and earlier (1 series) | — |
| Six Apart Ltd. Movable Type (Cloud Edition) | 8.7.0 (8 series), 7 r.5509 (7 series) | — |
| Six Apart Ltd. Movable Type Premium (Cloud Edition) | 2.10 (2 series), 1.67 (1 series) | — |
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