{"id":"CVE-2026-105193","aliases":["EUVD-2026-94765","GHSA-x92h-fpqj-5752"],"status":"published","title":"Booking Calendar \u003c 11.8 - Unauthenticated Booking Information Disclosure and Modification via Predictable Booking Hash","description":"The Booking Calendar WordPress plugin before 11.8 does not generate its per-booking access hashes with sufficient entropy, deriving each from a low-entropy time-seeded value, which can allow unauthenticated attackers who are able to determine a booking's creation time to predict the hash and then read that booking's personal data or modify the booking in place.","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":"2026-11-12","score":0.00118,"percentile":0.01715,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-326"],"published":"2026-10-08T06:00:06Z","modified":"2026-10-08T20:51:18Z","products":[{"vendor":"unknown","product":"booking calendar"},{"vendor":"wpdevelop","product":"booking calendar"}],"references":[{"url":"https://wpscan.com/vulnerability/c6a81cf3-095d-4d7e-83c5-80f44327e7fe/","tags":["exploit","vdb-entry","technical-description"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105193"},{"url":"https://wpscan.com/vulnerability/c6a81cf3-095d-4d7e-83c5-80f44327e7fe"},{"url":"https://github.com/advisories/GHSA-x92h-fpqj-5752"}],"sources":{"cve":[{"id":"CVE-2026-105193","title":"Booking Calendar \u003c 11.8 - Unauthenticated Booking Information Disclosure and Modification via Predictable Booking Hash","description":"The Booking Calendar WordPress plugin before 11.8 does not generate its per-booking access hashes with sufficient entropy, deriving each from a low-entropy time-seeded value, which can allow unauthenticated attackers who are able to determine a booking's creation time to predict the hash and then read that booking's personal data or modify the booking in place.","status":"published","published":"2026-10-08T06:00:06.554Z","modified":"2026-10-08T10:59:19.282Z","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-326"],"updated_at":"2026-11-02T14:19:56.755658Z"}],"euvd":[{"id":"EUVD-2026-94765","description":"The Booking Calendar WordPress plugin before 11.8 does not generate its per-booking access hashes with sufficient entropy, deriving each from a low-entropy time-seeded value, which can allow unauthenticated attackers who are able to determine a booking's creation time to predict the hash and then read that booking's personal data or modify the booking in place.","status":"published","published":"2026-10-08T06:00:06Z","modified":"2026-10-08T10:59:19Z","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":"2026-11-02T17:27:33.098422Z"}],"ghsa":[{"id":"GHSA-x92h-fpqj-5752","title":"The Booking Calendar WordPress plugin before 11.8 does not generate its per-booking access hashes...","description":"The Booking Calendar WordPress plugin before 11.8 does not generate its per-booking access hashes with sufficient entropy, deriving each from a low-entropy time-seeded value, which can allow unauthenticated attackers who are able to determine a booking's creation time to predict the hash and then read that booking's personal data or modify the booking in place.","status":"published","published":"2026-10-08T06:31:19Z","modified":"2026-10-08T12:34:24Z","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-326"],"updated_at":"2026-11-02T15:12:56.476072Z"}],"nvd":[{"id":"CVE-2026-105193","description":"The Booking Calendar WordPress plugin before 11.8 does not generate its per-booking access hashes with sufficient entropy, deriving each from a low-entropy time-seeded value, which can allow unauthenticated attackers who are able to determine a booking's creation time to predict the hash and then read that booking's personal data or modify the booking in place.","status":"published","published":"2026-10-08T06:16:39.473Z","modified":"2026-10-08T20:51:18.123Z","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-326"],"updated_at":"2026-11-02T14:12:55.142936Z"}]}}