Security: Unauthenticated Template Creation via /template/document-templates/create#8659
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Requires the requester to be a teacher of the course that owns the referenced document (
CourseVoter::EDIT, i.e. course teacher or admin) before creating a document template and flagging the document as a template, matching theisCurrentTeachergate used in the frontend. The course is resolved from the document itself (viarefDoc), so an attacker cannot authorize the action against an unrelated course supplied incid. Closes an endpoint that previously accepted unauthenticated, attacker-controlledrefDoc/cidvalues.Refs GHSA-hg2v-955j-35c3