# CVE-2018-20981: Information disclosure in n/a

> An attacker can retrieve submission data during Export Personal Data requests due to insufficient restrictions in the Ninja Forms plugin.

- **Severity:** Critical 9.1 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 22 Aug 2019
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-66qg-x433-hvxq

## What is CVE-2018-20981?

CVE-2018-20981 is a critical vulnerability in Ninjaforms Ninja Forms, published on 22 Aug 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The ninja-forms plugin before 3.3.9 for WordPress has insufficient restrictions on submission-data retrieval during Export Personal Data requests.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2018-20981?

It affects 1 product.


Products: Ninjaforms Ninja Forms.

## How do I fix CVE-2018-20981?

No fix has been published for CVE-2018-20981 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-20981 being exploited?

There is no known exploitation of CVE-2018-20981 in the wild and no public exploit code.

## Other vulnerabilities in Ninjaforms Ninja Forms

- [CVE-2025-9083](https://insights.sbomify.com/CVE-2025-9083/): Ninja-forms < 3.11.1 - Unauthenticated PHP Objection (critical 9.8)
- [CVE-2016-1209](https://insights.sbomify.com/CVE-2016-1209/): Deserialization in n/a (critical 9.8)
- [CVE-2024-25572](https://insights.sbomify.com/CVE-2024-25572/): Cross-site request forgery in Ninja Forms (high 8.8)
- [CVE-2021-24163](https://insights.sbomify.com/CVE-2021-24163/): Ninja Forms < 3.4.34 - Authenticated SendWP Plugin Installation and Client Secret Key Disclosure (high 8.8)
- [CVE-2018-16308](https://insights.sbomify.com/CVE-2018-16308/): Other in n/a (high 8.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-20981 and fix it if it is affected.

What it is: CVE-2018-20981 is a critical vulnerability in Ninjaforms Ninja Forms, published on 22 Aug 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-20981 in the wild and no public exploit code.

Affected product: Ninjaforms Ninja 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-2018-20981/ (Markdown: https://insights.sbomify.com/CVE-2018-20981/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-20981
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-20981
- OSV: https://osv.dev/vulnerability/CVE-2018-20981

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-20981/
Summaries are generated and may contain mistakes; the official description above is the record.