Forminator Forms Plugin up to 1.57.1 on WordPress XML-RPC code injection

Summaryinfo

A vulnerability was found in Forminator Forms Plugin. It has been rated as problematic. This affects an unknown function of the component XML-RPC. Performing a manipulation results in code injection. This vulnerability is cataloged as CVE-2026-87067. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Forminator Forms Plugin. This affects an unknown function of the component XML-RPC. The manipulation with an unknown input leads to a code injection vulnerability. CWE is classifying the issue as CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The Forminator Forms WordPress plugin before 1.57.2.1 does not restrict which classes may be instantiated when it deserialises a value taken from an XML-RPC request, allowing users who hold its forms-management permission to write a file of their choosing and execute arbitrary code. That permission belongs to an administrator by default, and to any role the site has granted it through the Forminator Forms WordPress plugin before 1.57.2.1's own settings, so the issue is reachable well below administrator on sites that use that feature.

The advisory is shared at wpscan.com. This vulnerability is uniquely identified as CVE-2026-87067 since 09/08/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Additional levels of successful authentication are needed for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059 for this issue.

Upgrading to version 1.57.2.1 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• WordPress Plugin

Name

• Forminator Forms Plugin

Version

• 1.38.3
• 1.39.2
• 1.51.1
• 1.57.0.5
• 1.57.0.7
• 1.57.1

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CPE 2.2info

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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