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

> Authenticated attackers with forms-management permissions can achieve remote code execution via unsafe deserialization in the Forminator Forms WordPress plugin.

- **Severity:** High 8.5 (`CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 20 Sep 2026
- **Updated:** 20 Sep 2026
- **Also known as:** GHSA-h6cq-4ghp-3r32

## What is CVE-2026-87067?

CVE-2026-87067 is a high-severity unsafe deserialization vulnerability in Unknown Forminator Forms, published on 20 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official 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.

Weakness: CWE-94 (Improper Control of Generation of Code)

## Which versions are affected by CVE-2026-87067?


## How do I fix CVE-2026-87067?

No fix has been published for CVE-2026-87067 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-87067 being exploited?

There is no known exploitation of CVE-2026-87067 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-87067 and fix it if it is affected.

What it is: CVE-2026-87067 is a high-severity unsafe deserialization vulnerability in Unknown Forminator Forms, published on 20 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-87067 in the wild and no public exploit code.

Affected product: Unknown Forminator Forms. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-87067/ (Markdown: https://insights.sbomify.com/CVE-2026-87067/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-87067
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-87067
- OSV: https://osv.dev/vulnerability/CVE-2026-87067

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-87067/
Summaries are generated and may contain mistakes; the official description above is the record.