High severity · published Jul 8, 2026
CVE-2026-12378
BookingPress <= 1.1.28 - Unauthenticated PHP Object Injection
8.1
CVSS
0.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 51% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AB
Appointment Booking Calendar Plugin and Scheduling Plugin ·
through 1.1.28 · source: vendor
Affected product
AB
Appointment Booking Calendar Plugin and Scheduling Plugin
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-12378
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-12378
wpscan.com
https://wpscan.com/vulnerability/eb3abb88-43c3-42a8-a8a8-2ad67d37e020/
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