What is GHSA-5jfm-f958-c6pr?

GHSA-5jfm-f958-c6pr is a security advisory published by GitHub Security Advisories with High severity. The Appointment Booking Calendar Plugin and Scheduling Plugin WordPress plugin through 1.1.28...

Which CVE IDs does GHSA-5jfm-f958-c6pr cover?

GHSA-5jfm-f958-c6pr covers the following CVE IDs: CVE-2026-12378. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-5jfm-f958-c6pr?

GHSA-5jfm-f958-c6pr has a CVSS v3 base score of 8.1, published by GitHub Security Advisories.

GHSA-5jfm-f958-c6prHighCVSS 8.1

The Appointment Booking Calendar Plugin and Scheduling Plugin WordPress plugin through 1.1.28...

Vendor

GitHub Security Advisories

Published

July 8, 2026

Last Modified

July 8, 2026

🔗 CVE IDs covered (1)

CVE-2026-12378 →

📋 Description

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.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-12378
https://wpscan.com/vulnerability/eb3abb88-43c3-42a8-a8a8-2ad67d37e020
https://github.com/advisories/GHSA-5jfm-f958-c6pr