WordPress Booking Activities plugin <= 1.18.4 - PHP Object Injection vulnerability
Priority MEDIUM 40CWE-502Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-502.
Summary
Unauthenticated PHP Object Injection in Booking Activities <= 1.18.4 versions.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00461 40th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Booking Activities Team | Booking Activities | up to 1.18.4 | — | No fix listed | CNA |
- Booking Activities VendorBooking Activities Team Affected up to 1.18.4 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-28176
- 2026-10-03 Alias added: GHSA-mc9r-rc7r-x444
More Booking Activities Team vulnerabilities
- TI-2026-63989 WordPress Booking Activities plugin <= 1.18.7.1 - PHP Object Injection vulnerability CVSS 3.1CRITICAL 9.8
- TI-2025-41562 WordPress Booking Activities plugin <= 1.16.44 - Privilege Escalation vulnerability CVSS 3.1HIGH 8.1
- TI-2026-28499 WordPress Booking Activities plugin <= 1.16.48.1 - Broken Access Control vulnerability CVSS 3.1MEDIUM 6.5
- TI-2024-20175 WordPress Booking Activities plugin <= 1.15.19 - Cross Site Scripting (XSS) vulnerability CVSS 3.1HIGH 7.1
Sources
- CVE-2026-28176 · CVE Program
- CVE-2026-28176 · NVD
- FIRST EPSS
- GHSA-mc9r-rc7r-x444 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences