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9a3eea6448
The history diff, delete, and version-restore routes authorize the URL prompt_id but then act on a caller-supplied history/version id without checking it belongs to that prompt (IDOR). Filter by prompt_id in compute_diff and delete_history_entry, and reject a cross-prompt version_id in update_prompt_version. Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>