vulnerability
WordPress Plugin: appointments: CVE-2017-20206: Deserialization of Untrusted Data
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 10 | (AV:N/AC:L/Au:N/C:C/I:C/A:C) | Oct 2, 2017 | Oct 21, 2025 | Oct 21, 2025 |
Severity
10
CVSS
(AV:N/AC:L/Au:N/C:C/I:C/A:C)
Published
Oct 2, 2017
Added
Oct 21, 2025
Modified
Oct 21, 2025
Description
The Appointments plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 2.2.1 via deserialization of untrusted input from the `wpmudev_appointments` cookie. This allows unauthenticated attackers to inject a PHP Object. Attackers were actively exploiting this vulnerability with the WP_Theme() class to create backdoors.
Solution
appointments-plugin-cve-2017-20206
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