CVE-2026-86841mediumCWE-502

CVE-2026-86841: medium-severity vulnerability in Online Scheduling and Appointment Booking System

Bookly 23.2 - 28.2 - Bookly Administrator+ PHP Object Injection via Diagnostics Advanced Options

Published · Updated

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33Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 4.7epss 0.2%
The Online Scheduling and Appointment Booking System WordPress plugin before 28.3 does not prevent deserialization of untrusted input and does not correctly restrict a privileged maintenance feature to administrators, allowing users granted a custom booking-management capability, which an administrator must explicitly assign, to inject arbitrary PHP objects, overwrite privileged site options, and read stored integration secrets.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
Affected products
Unknown · Online Scheduling and Appointment Booking System
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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