# CVE-2021-24790: Contact Form Advanced Database <= 1.0.8 - Unauthorised AJAX Calls

> Subscribers can delete arbitrary metadata and potentially execute code via PHP object injection due to missing authorization and CSRF checks in AJAX actions.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/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-3p9w-pv5h-crrp

## What is CVE-2021-24790?

CVE-2021-24790 is a medium-severity missing authorization vulnerability in Unknown Contact Form Advanced Database, published on 13 Dec 2021. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The Contact Form Advanced Database WordPress plugin through 1.0.8 does not have any authorisation as well as CSRF checks in its delete_cf7_data and export_cf7_data AJAX actions, available to any authenticated users, which could allow users with a role as low as subscriber to call them. The delete_cf7_data would lead to arbitrary metadata deletion, as well as PHP Object Injection if a suitable gadget chain is present in another plugin, as user data is passed to the maybe_unserialize() function without being first validated.

Weakness: CWE-352 (Cross-Site Request Forgery), CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2021-24790?

It affects 1 product.


Products: Contact Form Advanced Database Project Contact Form Advanced Database.

## How do I fix CVE-2021-24790?

No fix has been published for CVE-2021-24790 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-24790 being exploited?

There is no known exploitation of CVE-2021-24790 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-24790 and fix it if it is affected.

What it is: CVE-2021-24790 is a medium-severity missing authorization vulnerability in Unknown Contact Form Advanced Database, 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-2021-24790 in the wild and no public exploit code.

Affected product: Unknown Contact Form Advanced Database. 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-2021-24790/ (Markdown: https://insights.sbomify.com/CVE-2021-24790/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-24790
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-24790
- OSV: https://osv.dev/vulnerability/CVE-2021-24790

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-24790/
Summaries are generated and may contain mistakes; the official description above is the record.