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Vulnerability details: VCID-zjeh-35fm-xfcy
Vulnerability ID VCID-zjeh-35fm-xfcy
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 0.00138 https://api.first.org/data/v1/epss?cve=CVE-2020-13667
epss 0.00138 https://api.first.org/data/v1/epss?cve=CVE-2020-13667
epss 0.00138 https://api.first.org/data/v1/epss?cve=CVE-2020-13667
epss 0.00138 https://api.first.org/data/v1/epss?cve=CVE-2020-13667
epss 0.00138 https://api.first.org/data/v1/epss?cve=CVE-2020-13667
epss 0.00138 https://api.first.org/data/v1/epss?cve=CVE-2020-13667
epss 0.00138 https://api.first.org/data/v1/epss?cve=CVE-2020-13667
epss 0.00138 https://api.first.org/data/v1/epss?cve=CVE-2020-13667
epss 0.00138 https://api.first.org/data/v1/epss?cve=CVE-2020-13667
epss 0.00138 https://api.first.org/data/v1/epss?cve=CVE-2020-13667
epss 0.00138 https://api.first.org/data/v1/epss?cve=CVE-2020-13667
epss 0.00138 https://api.first.org/data/v1/epss?cve=CVE-2020-13667
epss 0.00138 https://api.first.org/data/v1/epss?cve=CVE-2020-13667
epss 0.00138 https://api.first.org/data/v1/epss?cve=CVE-2020-13667
epss 0.00138 https://api.first.org/data/v1/epss?cve=CVE-2020-13667
epss 0.00138 https://api.first.org/data/v1/epss?cve=CVE-2020-13667
epss 0.00138 https://api.first.org/data/v1/epss?cve=CVE-2020-13667
epss 0.00138 https://api.first.org/data/v1/epss?cve=CVE-2020-13667
epss 0.00138 https://api.first.org/data/v1/epss?cve=CVE-2020-13667
epss 0.00138 https://api.first.org/data/v1/epss?cve=CVE-2020-13667
epss 0.00138 https://api.first.org/data/v1/epss?cve=CVE-2020-13667
epss 0.00138 https://api.first.org/data/v1/epss?cve=CVE-2020-13667
epss 0.00138 https://api.first.org/data/v1/epss?cve=CVE-2020-13667
epss 0.00138 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
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2020-13667
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
cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*
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: AV:N/AC:M/Au:N/C:P/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2020-13667
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
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 0.34544
EPSS Score 0.00138
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T09:14:26.511098+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 37.0.0