PHP Object Injection Vulnerability in Bookly Plugin for WordPress
CVE-2026-12626

7.2HIGH

Key Information:

Vendor

WordPress
Status
Online Scheduling And Appointment Booking System – Bookly
Vendor
CVE Published:
10 October 2026

What is CVE-2026-12626?

The Bookly plugin for WordPress is susceptible to a PHP Object Injection vulnerability that affects all versions up to and including 28.2. This issue arises from the deserialization of untrusted input via the 'value' parameter, allowing authenticated attackers with custom-level access and higher to exploit this weakness by injecting a PHP object. Currently, there is no known gadget chain that can be leveraged for exploitation. Website administrators are encouraged to update to the latest version to mitigate risks associated with this vulnerability.

Affected Version(s)

Online Scheduling and Appointment Booking System – Bookly 0 <= 28.2

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/changeset/3707284/book...

CVSS V3.1

Score:
7.2
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Muni Nitish Kumar Yaddala (Stranger825)
.