{"id":"CVE-2026-9851","aliases":["EUVD-2026-34961","GHSA-9gp9-g392-77v9"],"status":"published","title":"Booking Package \u003c= 1.7.16 - Authenticated (Editor+) Privilege Escalation via Account Takeover to updateUser AJAX Action","description":"The Booking Package plugin for WordPress is vulnerable to Privilege Escalation via Account Takeover in versions up to, and including, 1.7.16. This is due to a missing capability check on the 'updateUser' branch of the package_app_action AJAX endpoint, where the handler only validates a nonce and the dispatcher invokes Schedule::updateUser() with the $administrator argument hard-coded to 1, bypassing the only owner-restriction check inside that function and allowing the target user to be determined solely by attacker-supplied input passed directly to wp_update_user(). This makes it possible for authenticated attackers, with Editor-level access and above, to change the email address and password of any account, including Administrator accounts, resulting in a full site takeover.","severity":{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00358,"percentile":0.29805,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-639"],"published":"2026-06-06T04:28:19Z","modified":"2026-07-23T07:10:00Z","products":[{"vendor":"masaakitanaka","product":"booking package"}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/795c1fd6-137b-4414-8d6b-30053bfb5924?source=cve"},{"url":"https://plugins.trac.wordpress.org/browser/booking-package/tags/1.7.13/lib/Schedule.php#L868"},{"url":"https://plugins.trac.wordpress.org/browser/booking-package/tags/1.7.13/index.php#L4477"},{"url":"https://plugins.trac.wordpress.org/browser/booking-package/tags/1.7.13/index.php#L4416"},{"url":"https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026old=3558752%40booking-package\u0026new=3558752%40booking-package\u0026sfp_email=\u0026sfph_mail="},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-9851"},{"url":"https://github.com/advisories/GHSA-9gp9-g392-77v9"}],"sources":{"cve":[{"id":"CVE-2026-9851","title":"Booking Package \u003c= 1.7.16 - Authenticated (Editor+) Privilege Escalation via Account Takeover to updateUser AJAX Action","description":"The Booking Package plugin for WordPress is vulnerable to Privilege Escalation via Account Takeover in versions up to, and including, 1.7.16. This is due to a missing capability check on the 'updateUser' branch of the package_app_action AJAX endpoint, where the handler only validates a nonce and the dispatcher invokes Schedule::updateUser() with the $administrator argument hard-coded to 1, bypassing the only owner-restriction check inside that function and allowing the target user to be determined solely by attacker-supplied input passed directly to wp_update_user(). This makes it possible for authenticated attackers, with Editor-level access and above, to change the email address and password of any account, including Administrator accounts, resulting in a full site takeover.","status":"published","published":"2026-06-06T04:28:19.979Z","modified":"2026-06-06T11:41:39.564Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T13:42:26.790871Z"}],"euvd":[{"id":"EUVD-2026-34961","description":"The Booking Package plugin for WordPress is vulnerable to Privilege Escalation via Account Takeover in versions up to, and including, 1.7.16. This is due to a missing capability check on the 'updateUser' branch of the package_app_action AJAX endpoint, where the handler only validates a nonce and the dispatcher invokes Schedule::updateUser() with the $administrator argument hard-coded to 1, bypassing the only owner-restriction check inside that function and allowing the target user to be determined solely by attacker-supplied input passed directly to wp_update_user(). This makes it possible for authenticated attackers, with Editor-level access and above, to change the email address and password of any account, including Administrator accounts, resulting in a full site takeover.","status":"published","published":"2026-06-06T04:28:19Z","modified":"2026-06-06T11:41:39Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T18:20:49.780813Z"}],"ghsa":[{"id":"GHSA-9gp9-g392-77v9","title":"The Booking Package plugin for WordPress is vulnerable to Privilege Escalation via Account...","description":"The Booking Package plugin for WordPress is vulnerable to Privilege Escalation via Account Takeover in versions up to, and including, 1.7.16. This is due to a missing capability check on the 'updateUser' branch of the package_app_action AJAX endpoint, where the handler only validates a nonce and the dispatcher invokes Schedule::updateUser() with the $administrator argument hard-coded to 1, bypassing the only owner-restriction check inside that function and allowing the target user to be determined solely by attacker-supplied input passed directly to wp_update_user(). This makes it possible for authenticated attackers, with Editor-level access and above, to change the email address and password of any account, including Administrator accounts, resulting in a full site takeover.","status":"published","published":"2026-06-06T06:30:29Z","modified":"2026-06-06T06:30:35Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T15:08:37.384572Z"}],"nvd":[{"id":"CVE-2026-9851","description":"The Booking Package plugin for WordPress is vulnerable to Privilege Escalation via Account Takeover in versions up to, and including, 1.7.16. This is due to a missing capability check on the 'updateUser' branch of the package_app_action AJAX endpoint, where the handler only validates a nonce and the dispatcher invokes Schedule::updateUser() with the $administrator argument hard-coded to 1, bypassing the only owner-restriction check inside that function and allowing the target user to be determined solely by attacker-supplied input passed directly to wp_update_user(). This makes it possible for authenticated attackers, with Editor-level access and above, to change the email address and password of any account, including Administrator accounts, resulting in a full site takeover.","status":"published","published":"2026-06-06T05:16:30.047Z","modified":"2026-07-23T07:10:00.113Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T14:12:22.73178Z"}]}}