# CVE-2021-36800: Akaunting OS Command Injection in 'Money.php'

> Attackers can execute arbitrary PHP code via crafted POST requests to the invoice endpoint in Akaunting accounting software.

- **Severity:** High 8.7 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/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:** 4 Aug 2021
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-2wq2-vmgv-993c

## What is CVE-2021-36800?

CVE-2021-36800 is a high-severity code injection vulnerability in Akaunting, published on 4 Aug 2021. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

Akaunting version 2.1.12 and earlier suffers from a code injection issue in the Money.php component of the application. A POST sent to /{company_id}/sales/invoices/{invoice_id} with an items[0][price] that includes a PHP callable function is executed directly. This issue was fixed in version 2.1.13 of the product.

Weakness: CWE-94 (Improper Control of Generation of Code)

## Which versions are affected by CVE-2021-36800?

It affects 1 product.


Products: Akaunting Akaunting.

## How do I fix CVE-2021-36800?

No fix has been published for CVE-2021-36800 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-36800 being exploited?

There is no known exploitation of CVE-2021-36800 in the wild and no public exploit code.

## Other vulnerabilities in Akaunting

- [CVE-2024-22836](https://insights.sbomify.com/CVE-2024-22836/): Command injection in n/a (critical 9.8)
- [CVE-2020-22390](https://insights.sbomify.com/CVE-2020-22390/): Code injection in n/a (high 8.8)
- [CVE-2021-36801](https://insights.sbomify.com/CVE-2021-36801/): Akaunting Authentication Bypass in Company Selection (high 8.1)
- [CVE-2025-55521](https://insights.sbomify.com/CVE-2025-55521/): Denial of service in n/a (medium 6.5)
- [CVE-2025-55522](https://insights.sbomify.com/CVE-2025-55522/): Cross-site scripting in n/a (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-36800 and fix it if it is affected.

What it is: CVE-2021-36800 is a high-severity code injection vulnerability in Akaunting, published on 4 Aug 2021. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-36800 in the wild and no public exploit code.

Affected product: Akaunting. 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-2021-36800/ (Markdown: https://insights.sbomify.com/CVE-2021-36800/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-36800
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-36800
- OSV: https://osv.dev/vulnerability/CVE-2021-36800

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-36800/
Summaries are generated and may contain mistakes; the official description above is the record.