{"id":"CVE-2026-87966","title":"The Easy Appointments WordPress plugin before 4.0.2.2 does not perform an ownership or authorization check on its unauthenticated appointment-reservation endpoint before updating an existing appointment identified by a request-supplied i…","summary":"The Easy Appointments WordPress plugin before 4.0.2.2 does not perform an ownership or authorization check on its unauthenticated appointment-reservation endpoint before updating an existing appointment identified by a request-supplied i…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","cwe":["CWE-639"],"product":"Easy Appointments","affected":["easy_appointments >= 4.0 < 4.0.2.2"],"published":"2026-09-18","updated":"2026-09-18","sourceUpdated":"2026-09-18T19:08:32.830","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-87966","references":[{"url":"https://wpscan.com/vulnerability/e2e625f4-c146-4622-b439-3179c4484613/","label":"contact@wpscan.com"}],"tags":["nvd","cve.org"],"epss":0.00221,"epssPercentile":0.12885,"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-18T11:02:32.954621Z"},"ingestedAt":"2026-09-18T06:36:37.986Z","slug":"CVE-2026-87966","body":"## Overview\n\nThe Easy Appointments WordPress plugin before 4.0.2.2 does not perform an ownership or authorization check on its unauthenticated appointment-reservation endpoint before updating an existing appointment identified by a request-supplied id, allowing unauthenticated attackers to overwrite, and through a follow-on cleanup delete, arbitrary appointments.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":206751,"id":"CVE-2026-87966","ts":1789731638980,"field":"cvss","old":null,"new":"5.3"},{"seq":206750,"id":"CVE-2026-87966","ts":1789731638980,"field":"severity","old":"none","new":"medium"}]}