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Fencer Intel
medium 5.3

CVE-2020-13667 json

Drupal Core Access bypass vulnerability

published 6y ago modified last mo. also BIT-drupal-2020-13667 , DRUPAL-CORE-2020-008 , EUVD-2022-5688 , GHSA-x2q9-r8gm-f657

cvss
5.3
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 60%
public exploits
0
none known

Summary

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.

Patch / fix

  • packagist drupal/core 8.8.10, 8.9.6, 9.0.6
  • packagist drupal/drupal 8.8.10, 8.9.6, 9.0.6
  • bitnami drupal 8.8.10, 8.9.6, 9.0.6
  • Drupal Drupal Core 8.8.10, 8.9.6, 9.0.6

Is CVE-2020-13667 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-13667 updated cvss 7.4

drupal: Workspaces module doesn't sufficiently check access permissions when switching workspaces

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.93% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
GitHub 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:P/I:N/A:N
OSV 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected packages

ecosystem package affected fixed in
packagist drupal/core
>=8.8.0, <8.8.10
>=8.9.0, <8.9.6
>=9.0.0, <9.0.6
>=8.0.0, <8.8.10
8.8.10
8.9.6
9.0.6
packagist drupal/drupal
>=8.8.0, <8.8.10
>=8.9.0, <8.9.6
>=9.0.0, <9.0.6
8.8.10
8.9.6
9.0.6
bitnami drupal
>=8.8.0, <8.8.10
>=8.9.0, <8.9.6
>=9.0.0, <9.0.6
8.8.10
8.9.6
9.0.6

Affected products

  • Drupal Drupal Core

Classification

Weakness
  • CWE-276 Incorrect Default Permissions

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.