CVE-2026-12378

The Appointment Booking Calendar Plugin and Scheduling Plugin WordPress plugin through 1.1.28 does not validate data before passing it to a PHP deserialization function, allowing unauthenticated attackers to inject arbitrary PHP objects; where a suitable gadget chain is present on the site this can be leveraged to achieve remote code execution.

Score

CVSS 3.1 8.1 High

Status

Deferred - contact@wpscan.com

Published

2026-07-08

Last modified

2026-07-08

Affected products

• Appointment Booking Calendar Plugin And Scheduling Plugin (Unknown)

References

• https://wpscan.com/vulnerability/eb3abb88-43c3-42a8-a8a8-2ad67d37e020/