Threat intelligence

Simply Schedule Appointments < 1.6.12.6 - Unauthenticated Insecure Direct Object Reference

CVE-2026-16540 · 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: Simply Schedule Appointments < 1.6.12.6 - Unauthenticated Insecure Direct Object Reference
Affected software: simply-schedule-appointments(Plugin)
Affected versions: < 1.6.12.6
Authentication: Unauthenticated
Vulnerability type: Other
CVE: CVE-2026-16540
Published: 6 August 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 64292fc7-8f74-4515-988b-f803b0fd7494). Methodology and redistribution notes

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