CVE-2026-55468 is an improper access control vulnerability in the Wagtail Pages admin API. Vulnerable implementations fail to correctly enforce page-level restrictions when handling admin API requests, allowing authenticated Wagtail admin users to access draft and live page fields that should not be exposed to them. Exposed data can include standard page metadata such as title, slug, SEO-related fields, search description, and custom fields explicitly declared in api_fields. The issue affects the Pages admin API query handling rather than ordinary public site page delivery, and stems from insufficient restriction of the queryset used by the admin API endpoints.
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