The Accessible Rich Internet Applications Working Group invites implementations of an updated Candidate Recommendation Snapshot of Core Accessibility API Mappings 1.2. This document describes how user agents should expose semantics of web content languages to accessibility APIs. This helps users with disabilities to obtain and interact with information using assistive technologies. Documenting these mappings promotes interoperable exposure of roles, states, properties, and events implemented by accessibility APIs and helps to ensure that this information appears in a manner consistent with author intent.This Core Accessibility API Mappings specification defines support that applies across multiple content technologies, including general keyboard navigation support and mapping of general-purpose roles, states, and properties provided in Web content via WAI-ARIA [WAI-ARIA-1.2]. Other Accessibility API Mappings specifications depend on and extend this Core specification for specific technologies, including native technology features and WAI-ARIA extensions. This document updates and will eventually supersede the guidance in the Core Accessibility API Mappings 1.1 [CORE-AAM-1.1] W3C Recommendation. It is part of the WAI-ARIA suite described in the WAI-ARIA Overview.Comments are welcome via the GitHub issues by 21 January 2025.