CVE-2020-13664
Drupal Core Arbitrary PHP code execution vulnerability
Arbitrary PHP code execution vulnerability in Drupal Core under certain circumstances. An attacker could trick an administrator into visiting a malicious site that could result in creating a carefully named directory on the file system. With this directory in place, an attacker could attempt to brute force a remote code execution vulnerability. Windows servers are most likely to be affected. This issue affects: Drupal Drupal Core 8.8.x versions prior to 8.8.8; 8.9.x versions prior to 8.9.1; 9.0.1 versions prior to 9.0.1.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
8.8
Arbitrary PHP code execution vulnerability in Drupal Core under certain circumstances. An attacker could trick an administrator into visiting a malicious site that could result in creating a carefully named directory on the file system. With this directory in place, an attacker could attempt to brute force a remote code execution vulnerability. Windows servers are most likely to be affected. This issue affects: Drupal Drupal Core 8.8.x versions prior to 8.8.8; 8.9.x versions prior to 8.9.1; 9.0.1 versions prior to 9.0.1.
- Record
CVE-2020-13664- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - CVSS 2.0
- 9.3 High
AV:N/AC:M/Au:N/C:C/I:C/A:C - Weakness
- CWE-77
- Updated
- 2026-11-02
CVE List No score
Arbitrary PHP code execution vulnerability in Drupal Core under certain circumstances. An attacker could trick an administrator into visiting a malicious site that could result in creating a carefully named directory on the file system. With this directory in place, an attacker could attempt to brute force a remote code execution vulnerability. Windows servers are most likely to be affected. This issue affects: Drupal Drupal Core 8.8.x versions prior to 8.8.8; 8.9.x versions prior to 8.9.1; 9.0.1 versions prior to 9.0.1.
- Record
CVE-2020-13664- Updated
- 2026-11-02
EUVDEUVD-2022-5732 No score
Arbitrary PHP code execution vulnerability in Drupal Core under certain circumstances. An attacker could trick an administrator into visiting a malicious site that could result in creating a carefully named directory on the file system. With this directory in place, an attacker could attempt to brute force a remote code execution vulnerability. Windows servers are most likely to be affected. This issue affects: Drupal Drupal Core 8.8.x versions prior to 8.8.8; 8.9.x versions prior to 8.9.1; 9.0.1 versions prior to 9.0.1.
- Record
EUVD-2022-5732- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-x72f-ggjw-v5xh
8.8
Drupal Core Arbitrary PHP code execution vulnerability
Arbitrary PHP code execution vulnerability in Drupal Core under certain circumstances. An attacker could trick an administrator into visiting a malicious site that could result in creating a carefully named directory on the file system. With this directory in place, an attacker could attempt to brute force a remote code execution vulnerability. Windows servers are most likely to be affected. This issue affects: Drupal Drupal Core 8.8.x versions prior to 8.8.8; 8.9.x versions prior to 8.9.1; 9.0.1 versions prior to 9.0.1.
- Record
GHSA-x72f-ggjw-v5xh- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-77
- Updated
- 2026-11-02
OSV
8.8
Arbitrary PHP code execution vulnerability in Drupal Core under certain circumstances. An attacker could trick an administrator into visiting a malicious site that could result in creating a carefully named directory on the file system. With this directory in place, an attacker could attempt to brute force a remote code execution vulnerability. Windows servers are most likely to be affected. This issue affects: Drupal Drupal Core 8.8.x versions prior to 8.8.8; 8.9.x versions prior to 8.9.1; 9.0.1 versions prior to 9.0.1.
- Record
CVE-2020-13664- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVGHSA-x72f-ggjw-v5xh
8.8
Drupal Core Arbitrary PHP code execution vulnerability
Arbitrary PHP code execution vulnerability in Drupal Core under certain circumstances. An attacker could trick an administrator into visiting a malicious site that could result in creating a carefully named directory on the file system. With this directory in place, an attacker could attempt to brute force a remote code execution vulnerability. Windows servers are most likely to be affected. This issue affects: Drupal Drupal Core 8.8.x versions prior to 8.8.8; 8.9.x versions prior to 8.9.1; 9.0.1 versions prior to 9.0.1.
- Record
GHSA-x72f-ggjw-v5xh- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-77
- Updated
- 2026-11-02
OSVBIT-drupal-2020-13664 No score
Arbitrary PHP code execution vulnerability in Drupal Core under certain circumstances. An attacker could trick an administrator into visiting a malicious site that could result in creating a carefully named directory on the file system. With this directory in place, an attacker could attempt to brute force a remote code execution vulnerability. Windows servers are most likely to be affected. This issue affects: Drupal Drupal Core 8.8.x versions prior to 8.8.8; 8.9.x versions prior to 8.9.1; 9.0.1 versions prior to 9.0.1.
- Record
BIT-drupal-2020-13664- Updated
- 2026-11-02
OSVDRUPAL-CORE-2020-005 No score
Drupal 8 and 9 have a remote code execution vulnerability under certain circumstances.
An attacker could trick an administrator into visiting a malicious site that could result in creating a carefully named directory on the file system. With this directory in place, an attacker could attempt to brute force a remote code execution vulnerability.
Windows servers are most likely to be affected.
- Record
DRUPAL-CORE-2020-005- 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 |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | lorenzog/CVE-2020-13664 | 2026-09-28 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-13664 is a high vulnerability (CVSS 8.8) in Drupal, published June 17, 2020. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 2.98%, the 87th percentile. Fixed in drupal/core 8.8.8.
References
drupal.org/sa-core-2020-005
nvd.nist.gov/vuln/detail/CVE-2020-13664
github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2020-13664.yaml
github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2020-13664.yaml
github.com/advisories/GHSA-x72f-ggjw-v5xh
github.com/drupal/core
Left out here: 84 versions. The JSON record has them.