CVE-2020-13665
Drupal Core Access bypass vulnerability
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 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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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 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.
- Record
CVE-2020-13665- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Updated
- 2026-11-02
CVE List No score
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 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.
- Record
CVE-2020-13665- Updated
- 2026-11-02
EUVDEUVD-2022-5673 No score
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 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.
- Record
EUVD-2022-5673- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-wxqp-jwc9-g39x
Drupal Core Access bypass vulnerability
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 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.
- Record
GHSA-wxqp-jwc9-g39x- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-863
- Updated
- 2026-11-02
OSV
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 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.
- Record
CVE-2020-13665- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVGHSA-wxqp-jwc9-g39x
Drupal Core Access bypass vulnerability
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 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.
- Record
GHSA-wxqp-jwc9-g39x- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-863
- Updated
- 2026-11-02
OSVBIT-drupal-2020-13665 No score
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 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.
- Record
BIT-drupal-2020-13665- Updated
- 2026-11-02
OSVDRUPAL-CORE-2020-006 No score
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.
- Record
DRUPAL-CORE-2020-006- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
drupal/corePackagist |
8.8.0 up to 8.8.8 | 8.8.8 |
drupal/corePackagist |
8.9.0 up to 8.9.1 | 8.9.1 |
drupal/corePackagist |
9.0.0 up to 9.0.1 | 9.0.1 |
drupal/drupalPackagist |
8.8.0 up to 8.8.8 | 8.8.8 |
drupal/drupalPackagist |
8.9.0 up to 8.9.1 | 8.9.1 |
drupal/drupalPackagist |
9.0.0 up to 9.0.1 | 9.0.1 |
drupalBitnami |
8.8.0 up to 8.8.8, 8.9.0 up to 8.9.1, 9.0.0 up to 9.0.1 | 8.8.88.9.19.0.1 |
drupal/corePackagist |
8.0.0 up to 8.8.8, 8.9.0 up to 8.9.1, 9.0.0 up to 9.0.1, plus listed versions 8.0.18.0.28.0.38.0.48.0.5 Show 45 moreShow less8.0.68.1.08.1.0-beta18.1.0-beta28.1.0-rc18.1.18.1.108.1.28.1.38.1.48.1.58.1.68.1.78.1.88.1.98.2.08.2.0-beta18.2.0-beta28.2.0-beta38.2.0-rc18.2.0-rc28.2.18.2.28.2.38.2.48.2.58.2.68.2.78.2.88.3.08.3.0-alpha18.3.0-beta18.3.0-rc18.3.0-rc28.3.18.3.28.3.38.3.48.3.58.3.68.3.78.3.88.3.98.4.08.4.0-alpha1 |
8.8.88.9.19.0.1 |
drupal/corePackagist |
8.8.0 up to 8.8.8, plus listed versions 8.8.18.8.28.8.38.8.48.8.58.8.68.8.7 |
8.8.8 |
drupal/drupalPackagist |
8.8.0 up to 8.8.8, plus listed versions 8.8.18.8.28.8.38.8.48.8.58.8.68.8.7 |
8.8.8 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-13665 is a critical vulnerability (CVSS 9.8) in Drupal, published June 17, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.27%, the 70th percentile. Fixed in drupal/core 8.8.8.
References
drupal.org/sa-core-2020-006
nvd.nist.gov/vuln/detail/CVE-2020-13665
github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2020-13665.yaml
Left out here: 84 versions. The JSON record has them.