Unauthenticated PHP Object Injection in Booking Activities Plugin from WordPress
CVE-2026-28176

8.8HIGH

Key Information:

Vendor

WordPress
Status
Booking Activities
Vendor
CVE Published:
13 August 2026

What is CVE-2026-28176?

The Booking Activities Plugin for WordPress, up to version 1.18.4, is vulnerable to unauthenticated PHP Object Injection. This flaw allows attackers to exploit the plugin without authentication, leading to potential data manipulation or execution of arbitrary code. It is crucial for users to update to the patched version to mitigate risks associated with this security vulnerability.

Affected Version(s)

Booking Activities <= 1.18.4

References

https://patchstack.com/database/wordpress/plugin/booking-...
vdb-entry

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Taylsec | Patchstack Bug Bounty Program
.