# CVE-2021-24872: Get Custom Field Values < 4.0 - Contributors+ Arbitrary Post Metadata Access

> Contributors can access arbitrary post metadata, including admin posts, due to missing permission checks in the Get Custom Field Values plugin.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/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:** 13 Dec 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-72q7-8432-wmmm

## What is CVE-2021-24872?

CVE-2021-24872 is a medium-severity missing authorization vulnerability in Unknown Get Custom Field Values, published on 13 Dec 2021. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The Get Custom Field Values WordPress plugin before 4.0 allows users with a role as low as Contributor to access other posts metadata without validating the permissions. Eg. contributors can access admin posts metadata.

Weakness: CWE-863 (Incorrect Authorization)

## Which versions are affected by CVE-2021-24872?

It affects 1 product.


Products: Get Custom Field Values Project Get Custom Field Values.

## How do I fix CVE-2021-24872?

No fix has been published for CVE-2021-24872 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-24872 being exploited?

There is no known exploitation of CVE-2021-24872 in the wild and no public exploit code.

## Other vulnerabilities in Unknown Get Custom Field Values

- [CVE-2023-45604](https://insights.sbomify.com/CVE-2023-45604/): WordPress Get Custom Field Values Plugin <= 4.0.1 is vulnerable to Cross Site Scripting (XSS) (medium 5.9)
- [CVE-2021-24871](https://insights.sbomify.com/CVE-2021-24871/): Get Custom Field Values < 4.0.1 - Contributor+ Stored Cross-Site Scripting (medium 5.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-24872 and fix it if it is affected.

What it is: CVE-2021-24872 is a medium-severity missing authorization vulnerability in Unknown Get Custom Field Values, published on 13 Dec 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-24872 in the wild and no public exploit code.

Affected product: Unknown Get Custom Field Values. 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-2021-24872/ (Markdown: https://insights.sbomify.com/CVE-2021-24872/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-24872
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-24872
- OSV: https://osv.dev/vulnerability/CVE-2021-24872

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-24872/
Summaries are generated and may contain mistakes; the official description above is the record.