# CVE-2019-11871: Cross-site scripting in n/a

> Cross-site scripting vulnerability in Custom Field Suite plugin allows attackers to inject scripts via editor or admin actions.

- **Severity:** Medium 5.4 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 10 May 2019
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-h47x-qcj6-wcgr

## What is CVE-2019-11871?

CVE-2019-11871 is a medium-severity cross-site scripting vulnerability in n/a, published on 10 May 2019. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

The Custom Field Suite plugin before 2.5.15 for WordPress has XSS for editors or admins.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2019-11871?

It affects 1 product.


Products: Custom Field Suite Project Custom Field Suite.

## How do I fix CVE-2019-11871?

No fix has been published for CVE-2019-11871 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-11871 being exploited?

There is no known exploitation of CVE-2019-11871 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2024-3561](https://insights.sbomify.com/CVE-2024-3561/): Custom Field Suite <= 2.6.7 - Authenticated (Contributor+) SQL Injection via Term Custom Field (high 8.8)
- [CVE-2024-3562](https://insights.sbomify.com/CVE-2024-3562/): Custom Field Suite <= 2.6.7 - Authenticated (Contributor+) PHP Code Injection via Loop Custom Field (high 8.8)
- [CVE-2024-3558](https://insights.sbomify.com/CVE-2024-3558/): Custom Field Suite <= 2.6.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via cfs[post_title] (medium 6.4)
- [CVE-2024-3559](https://insights.sbomify.com/CVE-2024-3559/): Custom Field Suite <= 2.6.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via cfs[post_content] (medium 6.4)
- [CVE-2023-32515](https://insights.sbomify.com/CVE-2023-32515/): WordPress Custom Field Suite Plugin <= 2.6.2.1 is vulnerable to Cross Site Scripting (XSS) (medium 5.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-11871 and fix it if it is affected.

What it is: CVE-2019-11871 is a medium-severity cross-site scripting vulnerability in n/a, published on 10 May 2019. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2019-11871 in the wild and no public exploit code.

Affected product: n/a. 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-2019-11871/ (Markdown: https://insights.sbomify.com/CVE-2019-11871/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-11871
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-11871
- OSV: https://osv.dev/vulnerability/CVE-2019-11871

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-11871/
Summaries are generated and may contain mistakes; the official description above is the record.