Threat intelligence

Appointment Booking Calendar <= 1.6.9.29 - Missing Authorization to Unauthenticated Sensitive Information Exposure via Settings REST API Endpoint

CVE-2026-3045 · simply-schedule-appointments

Important: Seeing this vulnerability listed does not mean your website is affected. Exposure depends on whether you run Simply Schedule Appointments at a vulnerable version. How SiteRespond intelligence works

Vulnerability: Appointment Booking Calendar <= 1.6.9.29 - Missing Authorization to Unauthenticated Sensitive Information Exposure via Settings REST API Endpoint
Affected software: simply-schedule-appointments(Plugin)
Affected versions: ≤ 1.6.9.29
Authentication: Unauthenticated
Vulnerability type: Other
CVE: CVE-2026-3045
Published: 12 March 2026
CISA KEV: Not listed in CISA KEV at last catalog refresh
Impact: This advisory describes a other issue in the affected software. Review the source advisory and your installed version to assess exposure.
Source: Data imported from Wordfence Intelligence (advisory 5970b8d6-0041-4c30-a6ce-fe67ebf415f5). Methodology and redistribution notes

Check whether your installed version is affected

SiteRespond Defence matches your installed Simply Schedule Appointments version against this catalog when the Defence plugin is connected to your WordPress site.

Start SiteRespond Defence for WordPress — £29.99/monthScan your website

All Simply Schedule Appointments advisoriesBack to catalog