Unknown Appointment Booking Calendar Plugin And Scheduling Plugin vulnerabilities

2 CVEs affecting Unknown Appointment Booking Calendar Plugin And Scheduling Plugin, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2026-76586, published 2026-08-29.

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Known exploited (CISA KEV) first, then by EPSS exploit probability.

• CVE-2026-12378, published 2026-07-08. High severity, CVSS 8.1. EPSS: 0.6% chance of exploitation in the next 30 days. The Appointment Booking Calendar Plugin and Scheduling Plugin WordPress plugin through 1.1.28 does not validate data before passing it to a PHP deserialization function, allowing unauthenticated…
• CVE-2026-76586, published 2026-08-29. High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days. The Appointment Booking Calendar Plugin and Scheduling Plugin WordPress plugin before 1.6.3 does not verify the amount actually paid against the server-side price staged for a booking when…