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Vulnerability details: VCID-9qyz-jfgb-5yfs
Vulnerability ID VCID-9qyz-jfgb-5yfs
Aliases CVE-2020-13667
GHSA-x2q9-r8gm-f657
Summary Drupal Core Access bypass vulnerability Access bypass vulnerability in of Drupal Core Workspaces allows an attacker to access data without correct permissions. The Workspaces module doesn't sufficiently check access permissions when switching workspaces, leading to an access bypass vulnerability. An attacker might be able to see content before the site owner intends people to see the content. This vulnerability is mitigated by the fact that sites are only vulnerable if they have installed the experimental Workspaces module. This issue affects Drupal Core8.8.X versions prior to 8.8.10; 8.9.X versions prior to 8.9.6; 9.0.X versions prior to 9.0.6.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-276 Incorrect Default Permissions
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.00144 https://api.first.org/data/v1/epss?cve=CVE-2020-13667
epss 0.00144 https://api.first.org/data/v1/epss?cve=CVE-2020-13667
epss 0.00144 https://api.first.org/data/v1/epss?cve=CVE-2020-13667
epss 0.00144 https://api.first.org/data/v1/epss?cve=CVE-2020-13667
epss 0.00144 https://api.first.org/data/v1/epss?cve=CVE-2020-13667
epss 0.00144 https://api.first.org/data/v1/epss?cve=CVE-2020-13667
epss 0.00144 https://api.first.org/data/v1/epss?cve=CVE-2020-13667
epss 0.00144 https://api.first.org/data/v1/epss?cve=CVE-2020-13667
epss 0.00144 https://api.first.org/data/v1/epss?cve=CVE-2020-13667
epss 0.00144 https://api.first.org/data/v1/epss?cve=CVE-2020-13667
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-x2q9-r8gm-f657
cvssv3.1 5.3 https://github.com/drupal/core
generic_textual MODERATE https://github.com/drupal/core
cvssv3.1 5.3 https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2020-13667.yaml
generic_textual MODERATE https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2020-13667.yaml
cvssv3.1 5.3 https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2020-13667.yaml
generic_textual MODERATE https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2020-13667.yaml
cvssv3.1 5.3 https://nvd.nist.gov/vuln/detail/CVE-2020-13667
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2020-13667
cvssv3.1 5.3 https://www.drupal.org/sa-core-2020-008
generic_textual MODERATE https://www.drupal.org/sa-core-2020-008
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2020-13667
https://github.com/drupal/core
https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2020-13667.yaml
https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2020-13667.yaml
https://nvd.nist.gov/vuln/detail/CVE-2020-13667
https://www.drupal.org/sa-core-2020-008
GHSA-x2q9-r8gm-f657 https://github.com/advisories/GHSA-x2q9-r8gm-f657
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Found at https://github.com/drupal/core
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Found at https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2020-13667.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Found at https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2020-13667.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2020-13667
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Found at https://www.drupal.org/sa-core-2020-008
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.34569
EPSS Score 0.00144
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:11:12.338000+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/05/GHSA-x2q9-r8gm-f657/GHSA-x2q9-r8gm-f657.json 38.0.0