# CVE-2021-24921: Advanced Database Cleaner < 3.0.4 - Reflected Cross-Site Scripting

> An attacker can execute arbitrary scripts in the victim's browser via unsanitized GET parameters in the Advanced Database Cleaner plugin.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 21 Feb 2022
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-8x47-hqwx-vmvf

## What is CVE-2021-24921?

CVE-2021-24921 is a medium-severity cross-site scripting vulnerability in Unknown Advanced Database Cleaner, published on 21 Feb 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

The Advanced Database Cleaner WordPress plugin before 3.0.4 does not sanitise and escape $_GET keys and values before outputting them back in attributes, leading to Reflected Cross-Site Scripting issues

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

## Which versions are affected by CVE-2021-24921?

It affects 1 product.


Products: Sigmaplugin Advanced Database Cleaner.

## How do I fix CVE-2021-24921?

No fix has been published for CVE-2021-24921 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-24921 being exploited?

There is no known exploitation of CVE-2021-24921 in the wild and no public exploit code.

## Other vulnerabilities in Unknown Advanced Database Cleaner

- [CVE-2023-49764](https://insights.sbomify.com/CVE-2023-49764/): WordPress Advanced Database Cleaner Plugin <= 3.1.2 is vulnerable to SQL Injection (high 7.6)
- [CVE-2021-24141](https://insights.sbomify.com/CVE-2021-24141/): Advanced Database Cleaner < 3.0.2 - Authenticated SQL injection (high 7.2)
- [CVE-2024-0668](https://insights.sbomify.com/CVE-2024-0668/): Advanced Database Cleaner <= 3.1.3 - Authenticated(Administrator+) PHP Object Injection via process_bulk_action (medium 6.6)
- [CVE-2022-2173](https://insights.sbomify.com/CVE-2022-2173/): Advanced Database Cleaner < 3.1.1 - Reflected Cross-Site Scripting (medium 6.1)
- [CVE-2022-46813](https://insights.sbomify.com/CVE-2022-46813/): WordPress Advanced Database Cleaner Plugin <= 3.1.1 is vulnerable to Cross Site Request Forgery (CSRF) (medium 4.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-24921 and fix it if it is affected.

What it is: CVE-2021-24921 is a medium-severity cross-site scripting vulnerability in Unknown Advanced Database Cleaner, published on 21 Feb 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-24921 in the wild and no public exploit code.

Affected product: Unknown Advanced Database Cleaner. 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-2021-24921/ (Markdown: https://insights.sbomify.com/CVE-2021-24921/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-24921
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-24921
- OSV: https://osv.dev/vulnerability/CVE-2021-24921

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-24921/
Summaries are generated and may contain mistakes; the official description above is the record.