{"schemaVersion":3,"id":"CVE-2023-2834","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"The BookIt plugin for WordPress is vulnerable to authentication bypass in versions up to, and including, 2.3.7. This is due to insufficient verification on the user being supplied during booking an appointment through the plugin. This makes it possible for unauthenticated attackers to log in as any existing user on the site, such as an administrator, if they have access to the email.","dates":{"published":"2023-06-30T01:56:17.606Z","modified":"2026-04-08T17:24:43.829Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":9.8,"severity":"critical","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":9.8,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":9.8,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"wordfence","score":9.8,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.01914,"percentile":0.79546,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.01914},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01914,"percentile":0.79546}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01914,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01914,"percentile":0.79546}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[{"id":"REF_CD51C93519F2A5E5","name":"Exploit Reference (wordfence.com)","source":"reference","url":"https://www.wordfence.com/blog/2023/06/stylemixthemes-addresses-authentication-bypass-vulnerability-in-bookit-wordpress-plugin/","maturity":"unknown","reliabilityScore":0.2,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null},{"id":"REF_70EE7D538FFA4356","name":"Exploit Reference (lana.codes)","source":"reference","url":"https://lana.codes/lanavdb/0dea1346-fd60-4338-8af6-6f89c29075d4/","maturity":"unknown","reliabilityScore":0.2,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null}],"exploitCount":2,"weaknesses":[{"id":"CWE-306","name":"Missing Authentication for Critical Function","description":"The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/306.html"},{"id":"CWE-288","name":"Authentication Bypass Using an Alternate Path or Channel","description":"The product requires authentication, but the product has an alternate path or channel that does not require authentication.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/288.html"}],"affected":[{"vendor":"stellarwp","product":"bookit — booking & appointment calendar","name":"Bookit — Booking & Appointment Calendar","label":"bookit — booking & appointment calendar","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 2.3.7","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 2.3.7","eol":null,"hubHref":"/vendor/stellarwp/bookit_-_booking__appointment_calendar"},{"vendor":"stylemixthemes","product":"bookit","name":"bookit","label":"bookit","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 2.3.7","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 2.3.7","eol":null,"hubHref":"/vendor/stylemixthemes/bookit"},{"vendor":"wordpress","product":"bookit","name":"Bookit — Booking & Appointment Calendar","label":"bookit","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 2.3.7 (fixed in 2.3.8)","noFixRecorded":false,"fixedIn":"2.3.8"}],"versionsText":"≤ 2.3.7 (fixed in 2.3.8)","eol":null,"hubHref":null}],"affectedCount":3,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/cfd32e46-a4fc-4c10-b546-9f9da75db791?source=cve","label":"www.wordfence.com/threat-intel/vulnerabilities/id/cfd32e46-a4fc-4c10-b546-9f9da75db791?source=cve","hostname":"www.wordfence.com","tags":["Third Party Advisory"]},{"url":"https://plugins.trac.wordpress.org/browser/bookit/tags/2.3.6/includes/classes/CustomerController.php#L27","label":"plugins.trac.wordpress.org/browser/bookit/tags/2.3.6/includes/classes/CustomerController.php","hostname":"plugins.trac.wordpress.org","tags":["Patch"]},{"url":"https://plugins.trac.wordpress.org/browser/bookit/tags/2.3.6/includes/classes/database/Customers.php#L63","label":"plugins.trac.wordpress.org/browser/bookit/tags/2.3.6/includes/classes/database/Customers.php","hostname":"plugins.trac.wordpress.org","tags":["Patch"]},{"url":"https://plugins.trac.wordpress.org/changeset/2919529/bookit","label":"plugins.trac.wordpress.org/changeset/2919529/bookit","hostname":"plugins.trac.wordpress.org","tags":["Patch"]},{"url":"https://plugins.trac.wordpress.org/changeset/2925153/bookit","label":"plugins.trac.wordpress.org/changeset/2925153/bookit","hostname":"plugins.trac.wordpress.org","tags":["Patch"]},{"url":"https://www.wordfence.com/blog/2023/06/stylemixthemes-addresses-authentication-bypass-vulnerability-in-bookit-wordpress-plugin/","label":"www.wordfence.com/blog/…","hostname":"www.wordfence.com","tags":["Exploit","Third Party Advisory"]},{"url":"https://lana.codes/lanavdb/0dea1346-fd60-4338-8af6-6f89c29075d4/","label":"lana.codes/lanavdb/0dea1346-fd60-4338-8af6-6f89c29075d4/","hostname":"lana.codes","tags":["Exploit","Third Party Advisory"]},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/cfd32e46-a4fc-4c10-b546-9f9da75db791","label":"www.wordfence.com/threat-intel/vulnerabilities/id/cfd32e46-a4fc-4c10-b546-9f9da75db791","hostname":"www.wordfence.com","tags":["Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2023-06-30T01:56:17.606Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-08T17:24:43.829Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":70,"level":"high","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T19:30:27.235Z","stale":false,"partial":false}}