CVE-2026-66583
WordPress Forminator plugin <= 1.57.0 - PHP Object Injection vulnerability
Unauthenticated PHP Object Injection in Forminator <= 1.57.0 versions.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
WordPress Forminator plugin <= 1.57.0 - PHP Object Injection vulnerability
Unauthenticated PHP Object Injection in Forminator <= 1.57.0 versions.
- Record
CVE-2026-66583- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-502
- Updated
- 2026-11-02
EUVDEUVD-2026-63332
Unauthenticated PHP Object Injection in Forminator <= 1.57.0 versions.
- Record
EUVD-2026-63332- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-f837-mqhp-xxmg
Unauthenticated PHP Object Injection in Forminator <= 1.57.0 versions.
Unauthenticated PHP Object Injection in Forminator <= 1.57.0 versions.
- Record
GHSA-f837-mqhp-xxmg- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-502
- Updated
- 2026-11-02
NVD
Unauthenticated PHP Object Injection in Forminator <= 1.57.0 versions.
- Record
CVE-2026-66583- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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-2026-66583 is a critical vulnerability (CVSS 9.8) in Wpmu Dev Forminator, published August 20, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.56%, the 47th percentile. No source names a fixed version.