CVE-2010-3921: Sixapart Movabletype

Medium severity, CVSS 4.3. EPSS: 1.3% chance of exploitation in the next 30 days.

Cross-site scripting (XSS) vulnerability in Movable Type 4.x before 4.35 and 5.x before 5.04 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Affected products

• Sixapart Movabletype: version 4.0 only; version 4.1 only; version 4.2 only; version 4.3 only; version 4.23 only; version 4.25 only; …

Published 2010-12-09. Last modified 2026-06-16.