Forminator permits unauthenticated PHP object injection
Forminator <= 1.57.0 allows an unauthenticated attacker to place attacker-controlled serialized data into an unsafe PHP deserialization path. Practical code execution depends on a usable gadget chain, but the CNA assigns high confidentiality, integrity and availability impact.
- Component
- Forminator
- Plugin slug
forminator- Affected
- n/a through 1.57.0
- Safe version
1.57.1- Published
- Aug 20, 2026
This CVE was published Aug 20, 2026 and is one of 47 known issues for this plugin.
Update, patch or deactivate.
Update Forminator to 1.57.1 or later. Review activity by the stated attacker class and investigate unexpected data access, state changes, files or sessions relevant to this vulnerability class.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
Unauthenticated PHP Object Injection in Forminator <= 1.57.0 versions.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H