Vulnerability DatabaseCVE-2020-13665
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CVE-2020-13665
Published:May 16, 2026
Updated:June 09, 2026
JSON:API PATCH requests may bypass validation for certain fields. By default, JSON:API works in a read-only mode which makes it impossible to exploit the vulnerability. Only sites that have the "read_only" set to "FALSE" under "jsonapi.settings" config are vulnerable.
Affected Packages
drupal/core (PHP):
Affected version(s) >=9.0.0 <9.0.1
Fix Suggestion:
Update to version 9.0.1
drupal/core (PHP):
Affected version(s) >=8.8.0 <8.8.8
Fix Suggestion:
Update to version 8.8.8
drupal/drupal (PHP):
Affected version(s) >=9.0.0 <9.0.1
Fix Suggestion:
Update to version 9.0.1
drupal/drupal (PHP):
Affected version(s) =8.9.x-dev <8.9.1
Fix Suggestion:
Update to version 8.9.1
drupal/core (PHP):
Affected version(s) =8.9.x-dev <8.9.1
Fix Suggestion:
Update to version 8.9.1
drupal/drupal (PHP):
Affected version(s) >=8.8.0 <8.8.8
Fix Suggestion:
Update to version 8.8.8
Related Resources (1)
https://www.drupal.org/sa-core-2020-006
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CVSS v4
Base Score:
9.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
9.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Incorrect Authorization
CWE-863
EPSS
Base Score:
0.58