CVE-2026-28176
WordPress Booking Activities plugin <= 1.18.4 - PHP Object Injection vulnerability
Unauthenticated PHP Object Injection in Booking Activities <= 1.18.4 versions.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
WordPress Booking Activities plugin <= 1.18.4 - PHP Object Injection vulnerability
Unauthenticated PHP Object Injection in Booking Activities <= 1.18.4 versions.
- Record
CVE-2026-28176- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-502
- Updated
- 2026-11-02
EUVDEUVD-2026-57959
Unauthenticated PHP Object Injection in Booking Activities <= 1.18.4 versions.
- Record
EUVD-2026-57959- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-mc9r-rc7r-x444
Unauthenticated PHP Object Injection in Booking Activities <= 1.18.4 versions.
Unauthenticated PHP Object Injection in Booking Activities <= 1.18.4 versions.
- Record
GHSA-mc9r-rc7r-x444- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-502
- Updated
- 2026-11-02
NVD
Unauthenticated PHP Object Injection in Booking Activities <= 1.18.4 versions.
- Record
CVE-2026-28176- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-502
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-28176 is a high vulnerability (CVSS 8.8) in Booking Activities Team Activities, published August 13, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.46%, the 40th percentile. No source names a fixed version.