# CVE-2021-28566: Magento Commerce information disclosure during upload action leveraging a specially crafted file

> An authenticated attacker can disclose the document root path by uploading a specially crafted PNG file to a product image in Magento Commerce.

- **Severity:** Low 3.7 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 8 Sep 2021
- **Updated:** 16 Sep 2024
- **Also known as:** BIT-magento-2021-28566, GHSA-w942-fw92-mqm2

## What is CVE-2021-28566?

CVE-2021-28566 is a low-severity vulnerability in Magento Magento, published on 8 Sep 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Magento versions 2.4.2 (and earlier), 2.4.1-p1 (and earlier) and 2.3.6-p1 (and earlier) are vulnerable to an Information Disclosure vulnerability when uploading a modified png file to a product image. Successful exploitation could lead to the disclosure of document root path by an unauthenticated attacker. Access to the admin console is required for successful exploitation.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2021-28566?

5 open source packages ship an affected version, including magento/community-edition and magento. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `magento/community-edition` | Packagist | From 2.3.0 | 2.3.7 |
| `magento/community-edition` | Packagist | From 2.3.0 | 2.3.7 |
| `magento/community-edition` | Packagist | From 2.4.0 | 2.4.2-p1 |
| `magento/community-edition` | Packagist | From 2.4.0 | 2.4.2-p1 |
| `magento` | Bitnami | All versions | 2.4.3 |

Products: Magento Magento.

## How do I fix CVE-2021-28566?

Upgrade magento/community-edition to a fixed version for your release line: 2.3.7 or 2.4.2-p1.

## Is CVE-2021-28566 being exploited?

There is no known exploitation of CVE-2021-28566 in the wild and no public exploit code.

## Other vulnerabilities in Magento Magento

- [CVE-2020-9664](https://insights.sbomify.com/CVE-2020-9664/): Magento php object injection vulnerability (critical 9.8)
- [CVE-2020-9576](https://insights.sbomify.com/CVE-2020-9576/): Magento command injection vulnerability (critical 9.8)
- [CVE-2020-9578](https://insights.sbomify.com/CVE-2020-9578/): Magento command injection vulnerability (critical 9.8)
- [CVE-2020-9579](https://insights.sbomify.com/CVE-2020-9579/): Magento Security mitigation bypass vulnerability (critical 9.8)
- [CVE-2020-9580](https://insights.sbomify.com/CVE-2020-9580/): Magento Security mitigation bypass vulnerability (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-28566 and fix it if it is affected.

What it is: CVE-2021-28566 is a low-severity vulnerability in Magento Magento, published on 8 Sep 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-28566 in the wild and no public exploit code.

Affected packages and fixed versions:
- magento/community-edition (Packagist): affected from 2.3.0; fixed in 2.3.7
- magento/community-edition (Packagist): affected from 2.3.0; fixed in 2.3.7
- magento/community-edition (Packagist): affected from 2.4.0; fixed in 2.4.2-p1
- magento/community-edition (Packagist): affected from 2.4.0; fixed in 2.4.2-p1
- magento (Bitnami): affected all versions; fixed in 2.4.3

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-2021-28566/ (Markdown: https://insights.sbomify.com/CVE-2021-28566/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-28566
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-28566
- OSV: https://osv.dev/vulnerability/CVE-2021-28566

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-28566/
Summaries are generated and may contain mistakes; the official description above is the record.