The Appointments plugin for WordPress is vulnerable to a type of attack called PHP Object Injection in versions up to and including 2.2.1. Attackers could exploit this vulnerability by using the `wpmudev_appointments` cookie to put malicious code into the plugin. This allowed them to create backdoors without needing to authenticate.
This information is sourced from www.wpvulnerability.com. An open-source database of vulnerabilities maintained by the community. Help us out by submitting vulnerabilities!
Version compare shows which versions have a vulnerability. For example: >= 2.2.8 <= 2.2.21 means:
> from 2.2.8
= including 2.2.8 & 2.2.21
< to 2.2.21
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