Movable Type Stored XSS/Arbitrary File Upload/CVE-2026-21393 Vulnerability Advisory
Security Advisory
JVN#45405689
High
Six Apart
Affected:
- Movable Type Software Edition 9.0.4-9.0.5
- Movable Type Software Edition 8.8.0-8.8.1
- Movable Type Software Edition 8.0.2-8.0.8
- Movable Type Premium 9.0.4
- Movable Type Premium 2.13 and earlier
Fixed in:
- Movable Type Software Edition 9.0.6
- Movable Type Software Edition 8.8.2
- Movable Type Software Edition 8.0.9
- Movable Type Premium 9.1.0
- Movable Type Premium 2.14
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