# CVE-2021-24877: MainWP Child < 4.1.8 - Admin+ SQL Injection

> High-privilege users can exploit SQL injection in MainWP Child plugin when WP Time Capsule is installed, allowing unauthorized database access.

- **Severity:** High 7.2 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 23 Nov 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-jq58-mjxh-8fp7

## What is CVE-2021-24877?

CVE-2021-24877 is a high-severity SQL injection vulnerability in Unknown MainWP Child - Securely connects sites to the MainWP WordPress Manager Dashboard, published on 23 Nov 2021. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

The MainWP Child WordPress plugin before 4.1.8 does not validate the orderby and order parameter before using them in a SQL statement, leading to an SQL injection exploitable by high privilege users such as admin when the Backup and Staging by WP Time Capsule plugin is installed

Weakness: CWE-89 (Improper Neutralization of Special Elements used in an SQL Command)

## Which versions are affected by CVE-2021-24877?

It affects 1 product.


Products: Mainwp Mainwp Child.

## How do I fix CVE-2021-24877?

No fix has been published for CVE-2021-24877 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-24877 being exploited?

There is no known exploitation of CVE-2021-24877 in the wild and no public exploit code.

## Other vulnerabilities in Unknown MainWP Child - Securely connects sites to the MainWP WordPress Manager Dashboard

- [CVE-2024-7492](https://insights.sbomify.com/CVE-2024-7492/): MainWP Child Reports <= 2.2 - Cross-Site Request Forgery to Arbitrary Options Update (high 8.8)
- [CVE-2023-3132](https://insights.sbomify.com/CVE-2023-3132/): MainWP Child <= 4.4.1.1 - Information Disclosure via Back-Up Files (medium 5.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-24877 and fix it if it is affected.

What it is: CVE-2021-24877 is a high-severity SQL injection vulnerability in Unknown MainWP Child - Securely connects sites to the MainWP WordPress Manager Dashboard, published on 23 Nov 2021. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-24877 in the wild and no public exploit code.

Affected product: Unknown MainWP Child - Securely connects sites to the MainWP WordPress Manager Dashboard. 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-2021-24877/ (Markdown: https://insights.sbomify.com/CVE-2021-24877/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-24877
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-24877
- OSV: https://osv.dev/vulnerability/CVE-2021-24877

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-24877/
Summaries are generated and may contain mistakes; the official description above is the record.