Threats Tagged 'cve-2026-13358'

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin for WordPress contains an Insecure Direct Object Reference vulnerability in all versions up to and including 1.6.12.10. This flaw allows authenticated users with contributor-level access or higher to access appointment records of arbitrary users via the ssa_past_appointments parameter. Attackers can harvest per-appointment ownership tokens embedded in the HTML, which can then be used without authentication to read or modify appointments, exposing sensitive customer PII such as names, emails, phone numbers, and private notes. The vulnerability arises because the /wp-json/ssa/v1/render-shortcode REST endpoint is registered unconditionally and its permission check only requires the 'edit_posts' capability, which contributors have.

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.6.12.10 via the ssa_past_appointments due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with contributor-level access and above, to access appointment records belonging to arbitrary users and harvest the per-appointment ownership tokens (32-character hashes) embedded in the rendered HTML, which can then be used without any authentication to read or modify those appointments including full customer PII such as name, email, phone number, and private notes. The /wp-json/ssa/v1/render-shortcode REST endpoint is registered unconditionally on rest_api_init regardless of whether the Divi theme is installed, and its permission callback only requires current_user_can('edit_posts'), meaning any Contributor-level account is sufficient to trigger this entire exploit chain.