Movable Type contains a reflected cross-site scripting vulnerability in the user information edit page. When Multi-Factor authentication plugin is enabled and a user accesses a crafted page while logged in to the affected product, an arbitrary script may be executed on the web browser of the user.

Movable Type contains a stored cross-site scripting vulnerability in the HTML edit mode of MT Block Editor. It is exploitable when TinyMCE6 is used as a rich text editor and an arbitrary script may be executed on a logged-in user's web browser.

Movable Type contains a stored cross-site scripting vulnerability in the custom block edit page of MT Block Editor. If exploited, an arbitrary script may be executed on a logged-in user's web browser.

Cross-site scripting (XSS) vulnerability in mt-wizard.cgi in Six Apart Movable Type before 4.261 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors, a different vulnerability than CVE-2009-2480.

Cross-site scripting (XSS) vulnerability in Movable Type (MT) before 3.34 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors related to the MTCommentPreviewIsStatic tag, which can open the "comment entry screen," a different vulnerability than CVE-2007-0231.