Simply Schedule Appointments: A security weakness
Simply Schedule Appointments is affected by a security weakness. Exposure depends on how the affected operation is made reachable by the site. The resulting impact depends on how the affected component exposes the vulnerable operation. The published affected range is <= 1.6.12.4.
- Component
- Simply Schedule Appointments
- Plugin slug
simply-schedule-appointments- Affected
- <= 1.6.12.4
- Safe version
1.6.12.6- Published
- Jul 13, 2026
- Weakness
- CWE-862 — Missing Authorization
This CVE was published Jul 13, 2026 and is one of 31 known issues for this plugin.
Update, patch or deactivate.
Update Simply Schedule Appointments to 1.6.12.6 or later, or disable and remove it until a fixed version is available.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
Missing Authorization vulnerability in NSquared Simply Schedule Appointments simply-schedule-appointments allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Simply Schedule Appointments: from n/a through <= 1.6.12.4.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L