{"id":"CVE-2026-86839","title":"The Online Scheduling and Appointment Booking System  WordPress plugin before 28.3 does not verify that appointment and payment records requested through its staff-role AJAX actions belong to the requesting staff member, allowing authent…","summary":"The Online Scheduling and Appointment Booking System  WordPress plugin before 28.3 does not verify that appointment and payment records requested through its staff-role AJAX actions belong to the requesting staff member, allowing authent…","severity":"low","cvss":3.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N","cwe":["CWE-639"],"product":"Online Scheduling and Appointment Booking System","affected":["online_scheduling_and_appointment_booking_system < 28.3"],"published":"2026-09-27","updated":"2026-09-28","sourceUpdated":"2026-09-28T16:38:58.950","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-86839","references":[{"url":"https://wpscan.com/vulnerability/3ab8b879-3ef7-4aa4-8620-1bde99697dcb/","label":"contact@wpscan.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-28T00:39:41.040285Z"},"ingestedAt":"2026-09-27T06:43:46.830Z","epss":0.00169,"epssPercentile":0.06259,"slug":"CVE-2026-86839","body":"## Overview\n\nThe Online Scheduling and Appointment Booking System  WordPress plugin before 28.3 does not verify that appointment and payment records requested through its staff-role AJAX actions belong to the requesting staff member, allowing authenticated attackers with a staff-level account to view, modify and delete other staff members' appointments and payments, including the associated customer's personal information.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":21,"depthScoreParts":{"impact":20.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":211741,"id":"CVE-2026-86839","ts":1790560910722,"field":"cvss","old":null,"new":"3.8"},{"seq":211740,"id":"CVE-2026-86839","ts":1790560910722,"field":"severity","old":"none","new":"low"}]}