CVE-2026-28176 PUBLISHED

WordPress Booking Activities plugin <= 1.18.4 - PHP Object Injection vulnerability

Assigner: Patchstack
Reserved: 25.02.2026 Published: 13.08.2026 Updated: 13.08.2026

Unauthenticated PHP Object Injection in Booking Activities <= 1.18.4 versions.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS Score: 8.8

Product Status

Vendor Booking Activities Team
Product Booking Activities
Versions Default: unaffected
  • affected from n/a to 1.18.4 (incl.)

Solutions

Update the WordPress Booking Activities plugin to the latest available version (at least 1.18.5).

Credits

  • Taylsec | Patchstack Bug Bounty Program finder

References

Problem Types

  • CWE-502 Deserialization of Untrusted Data CWE

Impacts

  • CAPEC-586 Object Injection