CVE-2026-28176

HIGH 8.8

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

CVSS Score

8.8

EPSS Score

0.0%

EPSS Percentile

0th

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

CWE	CWE-502
Vendor	booking activities team
Product	booking activities
Published	Aug 13, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

Booking Activities Team / Booking Activities

n/a ≤ 1.18.4

References

NVD ↗ CVE.org ↗ EPSS Data ↗

patchstack.com: https://patchstack.com/database/wordpress/plugin/booking-activities/vulnerability/wordpress-booking-activities-plugin-1-18-4-php-object-injection-vulnerability?_s_id=cve

Credits

Taylsec | Patchstack Bug Bounty Program