CVE detail
CVE-2026-13358
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.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 25.6 · diversity 6.5 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 12
- within the 30d window
- Peak daily
- 12
- highest bucket
Evidence
Source links by recency
12 source links · newest first
- https://www.wordfence.com/threat-intel/vulnerabilities/id/5dbe5094-d255-46b1-9e8e-9c48cd74e8a2?source=cvewww.wordfence.com
No excerpt available.
Patchwww.wordfence.comAug 16, 2026, 5:16 AM - https://plugins.trac.wordpress.org/changeset?reponame=&old=3617759%40simply-schedule-appointments&new=3617759%40simply-schedule-appointmentsplugins.trac.wordpress.org
No excerpt available.
Patchplugins.trac.wordpress.orgAug 16, 2026, 5:16 AM - https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/tags/1.6.12.4/includes/class-shortcodes.php#L781plugins.trac.wordpress.org
No excerpt available.
Patchplugins.trac.wordpress.orgAug 16, 2026, 5:16 AM - https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/tags/1.6.12.4/includes/class-divi.php#L254plugins.trac.wordpress.org
No excerpt available.
Patchplugins.trac.wordpress.orgAug 16, 2026, 5:16 AM - https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/tags/1.6.12.4/includes/class-divi.php#L237plugins.trac.wordpress.org
No excerpt available.
Patchplugins.trac.wordpress.orgAug 16, 2026, 5:16 AM - https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/tags/1.6.12.4/includes/class-db-model.php#L325plugins.trac.wordpress.org
No excerpt available.
Patchplugins.trac.wordpress.orgAug 16, 2026, 5:16 AM - https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/tags/1.6.12.4/includes/class-appointment-model.php#L1936plugins.trac.wordpress.org
No excerpt available.
Patchplugins.trac.wordpress.orgAug 16, 2026, 5:16 AM - https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/tags/1.6.11.0/includes/class-shortcodes.php#L781plugins.trac.wordpress.org
No excerpt available.
Patchplugins.trac.wordpress.orgAug 16, 2026, 5:16 AM - https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/tags/1.6.11.0/includes/class-divi.php#L254plugins.trac.wordpress.org
No excerpt available.
Patchplugins.trac.wordpress.orgAug 16, 2026, 5:16 AM - https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/tags/1.6.11.0/includes/class-divi.php#L237plugins.trac.wordpress.org
No excerpt available.
Patchplugins.trac.wordpress.orgAug 16, 2026, 5:16 AM - https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/tags/1.6.11.0/includes/class-db-model.php#L325plugins.trac.wordpress.org
No excerpt available.
Patchplugins.trac.wordpress.orgAug 16, 2026, 5:16 AM - https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/tags/1.6.11.0/includes/class-appointment-model.php#L1936plugins.trac.wordpress.org
No excerpt available.
Patchplugins.trac.wordpress.orgAug 16, 2026, 5:16 AM
Exploit code
Public exploit repository references
Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.
0 repository references · best confidence N/A · max 0 stars
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