CVE-2026-104898Online Scheduling and Appointment Booking System <= 28.4 - Insecure Direct Object Reference to Authenticated (Subscriber+) Privilege Escalation via 'id' and 'wp_user_id' Parameters via Query String / JSON Body
Updated under an hour ago ()
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It affects ladela Online Scheduling and Appointment Booking System – Bookly. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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The Online Scheduling and Appointment Booking System – Bookly plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 28.4 via the 'id, wp_user_id' parameter due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with subscriber-level access and above, to overwrite the WordPress account binding of any Bookly staff record, including those owned by administrators, effectively hijacking a higher-privileged staff member's account association and escalating privileges. Exploitation requires the attacking user to be linked to at least one Bookly staff record, which occurs by default whenever an admin enables the bookly_gen_allow_staff_edit_profile option (active on fresh installs) and links a WordPress user to a staff entry.
- CVSS
- 6.8 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
- Weakness (CWE)
- CWE-639
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Wordfence
- NVD analysis
- Deferred
- Record last updated
- Oct 11, 2026
- First seen by InfoSec Signals
- Oct 10, 2026
Affected products
ladela Online Scheduling and Appointment Booking System – Bookly ladela:online_scheduling_and_appointment_booking_system_bookly (from the name) | through 28.4 | CNA record |
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/1c3cfaa5-00e3-41b6-8f38-cebdd5dec180?source=cve
- https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/tags/28.4/backend/components/dialogs/staff/edit/Ajax.php#L111
- https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/tags/28.4/backend/components/dialogs/staff/edit/Ajax.php#L93
- https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/tags/28.4/lib/base/Request.php#L49
- https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/tags/28.4/lib/base/Entity.php#L172
- https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/tags/28.4/lib/base/Entity.php#L247
- https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/tags/28.4/backend/components/dialogs/staff/edit/Ajax.php#L364
- https://plugins.trac.wordpress.org/changeset?reponame=&new=3730881%40bookly-responsive-appointment-booking-tool%2Ftags%2F28.5&old=3722721%40bookly-responsive-appointment-booking-tool%2Ftags%2F28.4
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.