{"id":"CVE-2026-91847","aliases":["EUVD-2026-83509","GHSA-mj5r-8jcf-67xr"],"status":"published","title":"Bookly \u003c 28.2 - Unauthenticated AI Assistant Conversation Disclosure and Message Injection via IDOR","description":"The Online Scheduling and Appointment Booking System  WordPress plugin before 28.2 does not verify that the requester owns the AI booking-assistant conversation named in its unauthenticated conversation actions, allowing any unauthenticated visitor to read another visitor's assistant messages and to inject messages into their in-progress conversation.","severity":{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.00217,"percentile":0.12326,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-639"],"published":"2026-09-19T06:00:17Z","modified":"2026-09-21T13:34:57Z","products":[{"vendor":"unknown","product":"online scheduling and appointment booking system"}],"references":[{"url":"https://wpscan.com/vulnerability/9eef3086-3a67-4ee2-bd78-e346e7b05d62/","tags":["exploit","vdb-entry","technical-description"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91847"},{"url":"https://wpscan.com/vulnerability/9eef3086-3a67-4ee2-bd78-e346e7b05d62"},{"url":"https://github.com/advisories/GHSA-mj5r-8jcf-67xr"}],"sources":{"cve":[{"id":"CVE-2026-91847","title":"Bookly \u003c 28.2 - Unauthenticated AI Assistant Conversation Disclosure and Message Injection via IDOR","description":"The Online Scheduling and Appointment Booking System  WordPress plugin before 28.2 does not verify that the requester owns the AI booking-assistant conversation named in its unauthenticated conversation actions, allowing any unauthenticated visitor to read another visitor's assistant messages and to inject messages into their in-progress conversation.","status":"published","published":"2026-09-19T06:00:17.1Z","modified":"2026-09-19T13:18:25.713Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"adp"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T14:19:53.115938Z"}],"euvd":[{"id":"EUVD-2026-83509","description":"The Online Scheduling and Appointment Booking System  WordPress plugin before 28.2 does not verify that the requester owns the AI booking-assistant conversation named in its unauthenticated conversation actions, allowing any unauthenticated visitor to read another visitor's assistant messages and to inject messages into their in-progress conversation.","status":"published","published":"2026-09-19T06:00:17Z","modified":"2026-09-19T13:18:25Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T17:28:06.992666Z"}],"ghsa":[{"id":"GHSA-mj5r-8jcf-67xr","title":"The Online Scheduling and Appointment Booking System  WordPress plugin before 28.2 does not...","description":"The Online Scheduling and Appointment Booking System  WordPress plugin before 28.2 does not verify that the requester owns the AI booking-assistant conversation named in its unauthenticated conversation actions, allowing any unauthenticated visitor to read another visitor's assistant messages and to inject messages into their in-progress conversation.","status":"published","published":"2026-09-19T09:32:10Z","modified":"2026-09-19T15:31:24Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T15:12:13.368323Z"}],"nvd":[{"id":"CVE-2026-91847","description":"The Online Scheduling and Appointment Booking System  WordPress plugin before 28.2 does not verify that the requester owns the AI booking-assistant conversation named in its unauthenticated conversation actions, allowing any unauthenticated visitor to read another visitor's assistant messages and to inject messages into their in-progress conversation.","status":"published","published":"2026-09-19T07:16:33.48Z","modified":"2026-09-21T13:34:57.127Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T14:12:50.043898Z"}]}}