CVE-2008-5845: Sixapart Movable Type

Medium severity, CVSS 4.3. EPSS: 1.1% chance of exploitation in the next 30 days.

Multiple cross-site scripting (XSS) vulnerabilities in Six Apart Movable Type (MT) before 4.23 allow remote attackers to inject arbitrary web script or HTML via a (1) MTEntryAuthorUsername, (2) MTAuthorDisplayName, (3) MTEntryAuthorDisplayName, or (4) MTCommenterName field in a Profile View template; a (5) listing screen or (6) edit screen in the CMS app; (7) a TrackBack title, related to the HTML sanitization library; or (8) a user archive name (aka archive title) on a published Community Blog template.

Affected products

• Sixapart Movable Type: up to and including 4.21; version 3.0d only; version 3.1 only; version 3.01d only; version 3.2 only; version 3.3 only; …

Published 2009-01-05. Last modified 2026-06-16.