Description
The Simply Schedule Appointments plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 1.6.12.32 via the 'recursive' parameter. This makes it possible for unauthenticated attackers to extract customer PII — including names, email addresses, phone numbers, and custom form field data — stored in appointment records, as well as per-appointment public_token values. The leaked per-appointment public_token values also enable unauthenticated attackers to delete arbitrary appointments via the DELETE /wp-json/ssa/v1/appointments/{id} endpoint, which accepts the token as sole authorization.
References9
- plugins.trac.wordpress.org/browser/simply-schedule-appointments…
- plugins.trac.wordpress.org/browser/simply-schedule-appointments…
- plugins.trac.wordpress.org/browser/simply-schedule-appointments…
- plugins.trac.wordpress.org/browser/simply-schedule-appointments…
- plugins.trac.wordpress.org/browser/simply-schedule-appointments…
- plugins.trac.wordpress.org/browser/simply-schedule-appointments…
- plugins.trac.wordpress.org/browser/simply-schedule-appointments…
- plugins.trac.wordpress.org/changeset/3709365/simply-schedule-ap…
- www.wordfence.com/threat-intel/vulnerabilities/id/1984f80e-06ec…
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - EPSS — exploit probability
- 0% percentile: 37 · as of 10 November 2026
- CWE
- CWE-862
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.