How severe is CVE-2020-13667?

CVE-2020-13667 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2020-13667 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-13667?

CVE-2020-13667 affects Drupal. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-13667?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-13667 published?

CVE-2020-13667 was published on 2021-05-17 and last updated on 2026-06-17.

CVE-2020-13667

CVE-2020-13667 is a medium-severity vulnerability in Drupal with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-276.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 4.3
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-276
Affected product: Drupal
Published: 2021-05-17
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2020-13667?: 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.
How severe is CVE-2020-13667?: CVE-2020-13667 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2020-13667 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-13667?: CVE-2020-13667 affects Drupal. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-13667?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-13667 published?: CVE-2020-13667 was published on 2021-05-17 and last updated on 2026-06-17.

References

https://www.drupal.org/sa-core-2020-008

Affected products (1)

cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*

More vulnerabilities in Drupal

CVE-2009-3352 — Critical (CVSS 10.0): Multiple unspecified vulnerabilities in the quota_by_role (Quota by role) module for Drupal have unknown impact and…
CVE-2026-9082 — Critical (CVSS 9.8): Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Drupal Drupal…
CVE-2024-55638 — Critical (CVSS 9.8): Deserialization of Untrusted Data vulnerability in Drupal Core allows Object Injection.This issue affects Drupal Core:…
CVE-2024-55637 — Critical (CVSS 9.8): Deserialization of Untrusted Data vulnerability in Drupal Core allows Object Injection.This issue affects Drupal Core:…
CVE-2024-55636 — Critical (CVSS 9.8): Deserialization of Untrusted Data vulnerability in Drupal Core allows Object Injection.This issue affects Drupal Core:…
CVE-2020-13675 — Critical (CVSS 9.8): Drupal's JSON:API and REST/File modules allow file uploads through their HTTP APIs. The modules do not correctly run…

All CVEs affecting Drupal →

Other CWE-276 (Incorrect Default Permissions) vulnerabilities

CVE-2022-42150 — Critical (CVSS 10.0): TinyLab linux-lab v1.1-rc1 and cloud-labv0.8-rc2, v1.1-rc1 are vulnerable to insecure permissions. The default…
CVE-2020-29492 — Critical (CVSS 10.0): Dell Wyse ThinOS 8.6 and prior versions contain an insecure default configuration vulnerability. A remote…
CVE-2020-29491 — Critical (CVSS 10.0): Dell Wyse ThinOS 8.6 and prior versions contain an insecure default configuration vulnerability. A remote…
CVE-2025-40585 — Critical (CVSS 9.9): A vulnerability has been identified in Energy Services (All versions with G5DFR). Affected solutions using G5DFR…
CVE-2019-19896 — Critical (CVSS 9.9): In IXP EasyInstall 6.2.13723, there is Remote Code Execution via weak permissions on the Engine Service share. The…
CVE-2020-37129 — Critical (CVSS 9.8): Memu Play 7.1.3 contains an insecure folder permissions vulnerability that allows low-privileged users to modify the…

Browse all CWE-276 (Incorrect Default Permissions) vulnerabilities →