# CVE-2026-12400: Missing authorization in FlowForms – Conversational Form Builder

> Authenticated contributors can modify or publish any form, including admin-owned ones, via insecure direct object reference in the REST API.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N`)
- **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:** 10 Jul 2026
- **Updated:** 14 Jul 2026
- **Also known as:** GHSA-qcj5-mp4w-93gp

## What is CVE-2026-12400?

CVE-2026-12400 is a medium-severity missing authorization vulnerability in priyanshuchaudhary FlowForms – Conversational Form Builder, published on 10 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The FlowForms – Conversational Form Builder plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.1.1 via the update_form due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with contributor-level access and above, to modify the content, design, and settings of, as well as publish or revert, any form on the site — including forms owned by administrators — by supplying an arbitrary form ID in the REST URL.

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2026-12400?


## How do I fix CVE-2026-12400?

No fix has been published for CVE-2026-12400 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-12400 being exploited?

There is no known exploitation of CVE-2026-12400 in the wild and no public exploit code.

Public exploit code:

- https://github.com/0x00phantom-hat/CVE-2026-12400-Exploit (github_poc): https://github.com/0x00phantom-hat/CVE-2026-12400-Exploit

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-12400 and fix it if it is affected.

What it is: CVE-2026-12400 is a medium-severity missing authorization vulnerability in priyanshuchaudhary FlowForms – Conversational Form Builder, published on 10 Jul 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-2026-12400 in the wild and no public exploit code.

Affected product: priyanshuchaudhary FlowForms – Conversational Form Builder. 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-2026-12400/ (Markdown: https://insights.sbomify.com/CVE-2026-12400/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-12400
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-12400
- OSV: https://osv.dev/vulnerability/CVE-2026-12400

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-12400/
Summaries are generated and may contain mistakes; the official description above is the record.