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CVE-2026-12378

HIGH
8.1
CVSS 3.1
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.

Metadata

CVE ID
CVE-2026-12378
State
PUBLISHED
Assigner
WPScan
Reserved
2026-06-16 08:51 UTC
Published
2026-07-08 06:00 UTC
Last updated
2026-07-08 10:04 UTC
Vendor / Product
Unknown / Appointment Booking Calendar Plugin and Scheduling Plugin
Sources
cve.org  ·  NVD

Severity & Metrics

8.1 HIGH CVSS 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC — CISA Coordinator
Exploitation
none
Automatable
no
Tech. Impact
total
Affected products (1)
VendorProductPlatformVersions
Unknown Appointment Booking Calendar Plugin and Scheduling Plugin — 0 ≤ 1.1.28
Weakness (CWE)
CWESourceDescription
— cna CWE-502 Deserialization of Untrusted Data
CVSS scores (1)
ScoreSeverityVersionSourceVector
8.1 HIGH 3.1 adp CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
References (1)
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