Advisories

Drupal core – Moderately critical – Access Bypass – SA-CORE-2021-010

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Project: 
Drupal core
Date: 
2021-September-15
Security risk: 
Moderately critical 12∕25 AC:Basic/A:None/CI:Some/II:None/E:Theoretical/TD:Default
Vulnerability: 
Access Bypass
CVE IDs: 
CVE-2020-13677
Description: 

Under some circumstances, the Drupal core JSON:API module does not properly restrict access to certain content, which may result in unintended access bypass.

Sites that do not have the JSON:API module enabled are not affected.

This advisory is not covered by Drupal Steward.

Solution: 

Install the latest version:

If you are using Drupal 9.2, update to Drupal 9.2.6.
If you are using Drupal 9.1, update to Drupal 9.1.13.
If you are using Drupal 8.9, update to Drupal 8.9.19.

Versions of Drupal 8 prior to 8.9.x and versions of Drupal 9 prior to 9.1.x are end-of-life and do not receive security coverage.

Drupal 7 core does not include the JSON:API module and therefore is not affected.

Reported By: 
Brad Jones
Fixed By: 
Brad Jones
Jess of the Drupal Security Team
Björn Brala
Gabe Sullice
Mateu Aguiló Bosch

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