CVE-2026-2520
Online Scheduling and Appointment Booking System – Bookly <= 27.2 - Missing Authorization to Authenticated (Subscriber+) Limited Arbitrary Plugin Update
CVSS Score
5.4
EPSS Score
0.0%
EPSS Percentile
0th
The Online Scheduling and Appointment Booking System – Bookly plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'updateAddon' function in all versions up to, and including, 27.2. This makes it possible for authenticated attackers, with Subscriber-level access and above, to update any plugin with a main file of 'main.php' to its latest version.
| CWE | CWE-862 |
| Vendor | ladela |
| Product | online scheduling and appointment booking system – bookly |
| Published | Sep 8, 2026 |
| Last Updated | Sep 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
ladela / Online Scheduling and Appointment Booking System – Bookly
0 ≤ 27.2
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/b7edc69b-363d-49df-b82b-a9ad4fe9224a?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/trunk/lib/PluginsUpdater.php#L105 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/trunk/lib/PluginsUpdater.php#L10 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset/3504922/
Credits
KoreaInfoSec