CVE-2026-2520CWE-862broken-access-control

CVE-2026-2520

Medium · published September 8, 2026

CVSS v3.1
5.4
EPSS
0%
Percentile
10.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.00212 · 10.9th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-09-08T16:16Z
References (4)
https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/trunk/lib/PluginsUpdater.php#L10 · [email protected]https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/trunk/lib/PluginsUpdater.php#L105 · [email protected]https://plugins.trac.wordpress.org/changeset/3504922/ · [email protected]https://www.wordfence.com/threat-intel/vulnerabilities/id/b7edc69b-363d-49df-b82b-a9ad4fe9224a?source=cve · [email protected]
EPSS history
Timeline
  • 10 SEP 03:16Z
    EPSS moved — → 0%
    epss
  • 08 SEP 11:30Z
    Online Scheduling and Appointment Booking System – Bookly <= 27.2 - Missing Authorization to Authenticated (Subscriber+) Limited Arbitrary Plugin Update
    cvelistv5