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Known vulnerabilities in Unknown Simply Schedule Appointments

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CVE Summary Score Published
CVE-2026-16541 The Simply Schedule Appointments WordPress plugin before 1.6.12.17 does not restrict the user records returned by some… 6.5 Medium Aug 15, 2026
CVE-2026-15254 The Simply Schedule Appointments WordPress plugin before 1.6.12.11 does not perform a capability check on an… 6.5 Medium Aug 3, 2026
CVE-2026-16540 The Simply Schedule Appointments WordPress plugin before 1.6.12.6 does not correctly restrict a bulk appointment… 7.5 High Aug 2, 2026
CVE-2026-13400 Simply Schedule Appointments is vulnerable to unauthenticated Stored Cross-Site Scripting in all versions up to and… 6.1 Medium Jul 27, 2026

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