{"id":"CVE-2026-6723","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-6723","generatedAt":"2026-10-28T00:53:04.869Z","title":"The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to Incorrect Authorization in all versions up to, and including, 1.6.11.11.","description":"The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to Incorrect Authorization in all versions up to, and including, 1.6.11.11. This is due to the appointment update REST API endpoint not restricting which fields can be modified by token-authenticated customers. This makes it possible for unauthenticated attackers to modify admin-controlled fields on that appointment, including faking payment confirmation, reassigning the appointment to another user, and changing the service type.","published":"2026-10-10T05:16:40.000Z","lastModified":"2026-10-13T13:29:13.000Z","status":"Deferred","sourceIdentifier":"security@wordfence.com","cvss":{"version":"3.1","score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"},"cwe":["CWE-863"],"affected":[],"epss":{"score":0.00189,"percentile":0.08403,"date":"2026-10-26","history":[{"date":"2026-10-10","score":0.00189,"percentile":0.07811}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.19%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-10T05:16:40.000Z","detail":{"score":"5.3","severity":"MEDIUM","publishedAt":"2026-10-10T05:16:40.147Z"},"summary":"New CVE, medium severity (CVSS 5.3)."}],"references":[{"url":"https://plugins.trac.wordpress.org/changeset/3562241/simply-schedule-appointments","source":"security@wordfence.com"},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/b6f16178-1aa3-4af2-a125-74467bc57e70?source=cve","source":"security@wordfence.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-6723","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}