The Kirki – Freeform Page Builder, Website Builder & Customizer plugin for WordPress contains an Insecure Direct Object Reference (IDOR) flaw. This occurs due to missing validation on a user-controlled key within the `context` parameter. Unauthenticated attackers can exploit this by providing an arbitrary post ID via the `context` parameter and an attacker-controlled block template to read the full title, content, and excerpt of any WordPress post, including drafts, pending, privately published, password-protected, and trashed posts, regardless of the author.