CVE-2026-2520

Online Scheduling and Appointment Booking System – Bookly <= 27.2 - Missing Authorization to Authenticated (Subscriber+) Limited Arbitrary Plugin Update

5.4 Medium

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: Low
Availability: Low

Exploit likelihood

0.38%Up 0.2 points since Sep 9, 2026

What each source reports

CVE List Score used 5.4

Online Scheduling and Appointment Booking System – Bookly <= 27.2 - Missing Authorization to Authenticated (Subscriber+) Limited Arbitrary Plugin Update

Record: CVE-2026-2520
CVSS 3.1: 5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Weakness: CWE-862
Updated: 2026-11-02

EUVDEUVD-2026-72701 5.4

Record: EUVD-2026-72701
CVSS 3.1: 5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Updated: 2026-11-02

GitHub AdvisoriesGHSA-pqcg-gw2f-rqp8 5.4

The Online Scheduling and Appointment Booking System – Bookly plugin for WordPress is vulnerable...

Record: GHSA-pqcg-gw2f-rqp8
CVSS 3.1: 5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Weakness: CWE-862
Updated: 2026-11-02

NVD 5.4

Record: CVE-2026-2520
CVSS 3.1: 5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Weakness: CWE-862
Updated: 2026-11-02

Affected products

ladela online scheduling and appointment booking system – bookly

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-2520 is a medium vulnerability (CVSS 5.4) in Ladela Online Scheduling And Appointment Booking System – Bookly, published September 8, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.38%, the 32nd percentile. No source names a fixed version.