# CVE-2020-26252: Layout XML RCE Vulnerability in OpenMage

> Administrators can upload executable files and trigger remote code execution via layout XML in OpenMage.

- **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:** 20 Jan 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-99m6-r53j-4hh2

## What is CVE-2020-26252?

CVE-2020-26252 is a high-severity vulnerability in OpenMage magento-lts, published on 20 Jan 2021. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

OpenMage is a community-driven alternative to Magento CE. In OpenMage before versions 19.4.10 and 20.0.6, there is a vulnerability which enables remote code execution. In affected versions an administrator with permission to update product data to be able to store an executable file on the server and load it via layout xml. The latest OpenMage Versions up from 19.4.10 and 20.0.6 have this issue solved.

Weakness: CWE-434 (Unrestricted Upload of File with Dangerous Type), CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2020-26252?

It affects 1 product.


Products: Openmage Openmage.

## How do I fix CVE-2020-26252?

No fix has been published for CVE-2020-26252 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-26252 being exploited?

There is no known exploitation of CVE-2020-26252 in the wild and no public exploit code.

## Other vulnerabilities in OpenMage magento-lts

- [CVE-2020-26285](https://insights.sbomify.com/CVE-2020-26285/): Widget instances allows a hacker to inject an executable file on the server on OpenMage (high 8.7)
- [CVE-2020-26295](https://insights.sbomify.com/CVE-2020-26295/): CMS Editor code execution (high 8.7)
- [CVE-2021-32758](https://insights.sbomify.com/CVE-2021-32758/): Layout XML Arbitrary Code Fix (high 7.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-26252 and fix it if it is affected.

What it is: CVE-2020-26252 is a high-severity vulnerability in OpenMage magento-lts, published on 20 Jan 2021. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-26252 in the wild and no public exploit code.

Affected product: OpenMage magento-lts. 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-2020-26252/ (Markdown: https://insights.sbomify.com/CVE-2020-26252/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-26252
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-26252
- OSV: https://osv.dev/vulnerability/CVE-2020-26252

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-26252/
Summaries are generated and may contain mistakes; the official description above is the record.