# CVE-2021-24905: Advanced Contact form 7 DB < 1.8.7 - Subscriber+ Arbitrary File Deletion

> Authenticated users can delete arbitrary files due to missing authorization and CSRF checks, potentially leading to privilege escalation and code execution.

- **Severity:** High 8.0 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H`)
- **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:** 21 Mar 2022
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-mjq7-mv4f-72x7

## What is CVE-2021-24905?

CVE-2021-24905 is a high-severity missing authorization vulnerability in Unknown Advanced Contact form 7 DB, published on 21 Mar 2022. 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 Advanced Contact form 7 DB WordPress plugin before 1.8.7 does not have authorisation nor CSRF checks in the acf7_db_edit_scr_file_delete AJAX action, and does not validate the file to be deleted, allowing any authenticated user to delete arbitrary files on the web server. For example, removing the wp-config.php allows attackers to trigger WordPress setup again, gain administrator privileges and execute arbitrary code or display arbitrary content to the users.

Weakness: CWE-352 (Cross-Site Request Forgery), CWE-863 (Incorrect Authorization)

## Which versions are affected by CVE-2021-24905?

It affects 1 product.


Products: Vsourz Advanced Cf7 Db.

## How do I fix CVE-2021-24905?

No fix has been published for CVE-2021-24905 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-24905 being exploited?

There is no known exploitation of CVE-2021-24905 in the wild and no public exploit code.

## Other vulnerabilities in Unknown Advanced Contact form 7 DB

- [CVE-2019-13571](https://insights.sbomify.com/CVE-2019-13571/): SQL injection in n/a (critical 9.8)
- [CVE-2022-45285](https://insights.sbomify.com/CVE-2022-45285/): Cross-site scripting in n/a (medium 6.1)
- [CVE-2022-29408](https://insights.sbomify.com/CVE-2022-29408/): Cross-site scripting in Advanced Contact form 7 DB (WordPress plugin) (medium 4.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-24905 and fix it if it is affected.

What it is: CVE-2021-24905 is a high-severity missing authorization vulnerability in Unknown Advanced Contact form 7 DB, published on 21 Mar 2022. 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-2021-24905 in the wild and no public exploit code.

Affected product: Unknown Advanced Contact form 7 DB. 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-2021-24905/ (Markdown: https://insights.sbomify.com/CVE-2021-24905/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-24905
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-24905
- OSV: https://osv.dev/vulnerability/CVE-2021-24905

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-24905/
Summaries are generated and may contain mistakes; the official description above is the record.