# CVE-2021-36871: WordPress WP Google Maps Pro premium plugin <= 8.1.11 - Multiple Authenticated Persistent XSS vulnerabilities

> Authenticated attackers can inject persistent scripts into WP Google Maps Pro, potentially executing code or hijacking user sessions.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 Sep 2021
- **Updated:** 28 Apr 2026
- **Also known as:** GHSA-gxcf-q4pg-ghgr

## What is CVE-2021-36871?

CVE-2021-36871 is a medium-severity cross-site scripting vulnerability in Code Cabin Inc WP Google Maps Pro, published on 9 Sep 2021. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

Multiple Authenticated Persistent Cross-Site Scripting (XSS) vulnerabilities in WordPress WP Google Maps Pro premium plugin (versions <= 8.1.11). Vulnerable parameters: &wpgmaps_marker_category_name, Value > &attributes[], Name > &attributes[], &icons[], &names[], &description, &link, &title.

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

## Which versions are affected by CVE-2021-36871?

It affects 1 product.


Products: Codecabin Wp Go Maps.

## How do I fix CVE-2021-36871?

No fix has been published for CVE-2021-36871 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-36871 being exploited?

There is no known exploitation of CVE-2021-36871 in the wild and no public exploit code.

## Other vulnerabilities in Code Cabin Inc WP Google Maps Pro

- [CVE-2019-10692](https://insights.sbomify.com/CVE-2019-10692/): SQL injection in n/a (critical 9.8)
- [CVE-2024-29931](https://insights.sbomify.com/CVE-2024-29931/): WordPress WP Go Maps plugin <= 9.0.29 - Reflected Cross Site Scripting (XSS) vulnerability (high 7.1)
- [CVE-2024-5994](https://insights.sbomify.com/CVE-2024-5994/): WP Go Maps (formerly WP Google Maps) <= 9.0.38 - Authenticated (Contributor+) Stored Cross-Site Scripting (medium 6.4)
- [CVE-2024-3557](https://insights.sbomify.com/CVE-2024-3557/): WP Go Maps (formerly WP Google Maps) <= 9.0.36 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode (medium 6.4)
- [CVE-2024-1582](https://insights.sbomify.com/CVE-2024-1582/): WP Go Maps (formerly WP Google Maps) <= 9.0.32 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode (medium 6.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-36871 and fix it if it is affected.

What it is: CVE-2021-36871 is a medium-severity cross-site scripting vulnerability in Code Cabin Inc WP Google Maps Pro, published on 9 Sep 2021. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-36871 in the wild and no public exploit code.

Affected product: Code Cabin Inc WP Google Maps Pro. 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-2021-36871/ (Markdown: https://insights.sbomify.com/CVE-2021-36871/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-36871
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-36871
- OSV: https://osv.dev/vulnerability/CVE-2021-36871

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-36871/
Summaries are generated and may contain mistakes; the official description above is the record.