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.
Use CWE-79, Sixapart vendor hub and Movable Type product page to widen CVE-2008-5845 into its surrounding weakness, vendor, and product context.
Compare it with CVE-2022-38078, CVE-2021-20837 and CVE-2026-25776 for nearby disclosures in the same product family.