Home/CVE/Access bypass vulnerability in Drupal Core allows JSON:API when JSON:API is in read/write mode. Only sites that have the
CVE

CVE-2020-13665

Access bypass vulnerability in Drupal Core allows JSON:API when JSON:API is in read/write mode. Only sites that have the

Access bypass vulnerability in Drupal Core allows JSON:API when JSON:API is in read/write mode. Only sites that have the read_only set to FALSE under jsonapi.settings config are vulnerable. This issue affects: Drupal Core 8.8.x versions prior to 8.8.8.

8.9.x versions prior to 8.9.1.

9.0.x versions prior to 9.0.1.

CRITICAL · CVSS 9.8 EPSS 0.00581
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
▤

Affected Products & Versions

3
drupal>= 8.8.0 and < 8.8.8
drupal>= 8.9.0 and < 8.9.1
drupal>= 9.0.0 and < 9.0.1
▤

Affected Packages

2
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Packagist drupal/core CRITICAL fixed in 8.8.8
Packagist drupal/drupal CRITICAL fixed in 8.8.8
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · mlhess@drupal.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD05 May 2021 · 03:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.drupal.org/sa-core-2020-006Vendor Advisory
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