6.8.6
Release Date 27th May 2026
Security
- Hardened authorization on the oEmbed field's AJAX search endpoint. The endpoint now requires an authenticated user with content-authoring capability; the legacy unauthenticated entry point is deprecated and will be removed in a future release.
- Hardened front-end
acf_form()submission processing so thepost_titleandpost_contentform options are respected on save, and the save pipeline only accepts values for fields the rendered form exposed. A newacf/form/allowed_field_keysfilter is available for sites that legitimately extend a form at runtime.