When using node access controls with a multilingual site, Drupal marks the untranslated version of a node as the default fallback for access queries. This fallback is used for languages that do not yet have a translated version of the created node. This could result in an access bypass vulnerability.
This issue is mitigated by the fact that it only applies to sites that a) use the Content Translation module; and b) use a node access module such as Domain Access which implement hook_node_access_records().
Part of security release SA-CORE-2018-001
This vulnerability affects the following application versions:
- Drupal 8.0.0
- Drupal 8.0.1
- Drupal 8.0.2
- Drupal 8.0.3
- Drupal 8.0.4
- Drupal 8.0.5
- Drupal 8.0.6
- Drupal 8.1.0
- Drupal 8.1.1
- Drupal 8.1.2
- Drupal 8.1.3
- Drupal 8.1.4
- Drupal 8.1.5
- Drupal 8.1.6
- Drupal 8.1.7
- Drupal 8.1.8
- Drupal 8.1.9
- Drupal 8.1.10
- Drupal 8.2.0
- Drupal 8.2.1
- Drupal 8.2.2
- Drupal 8.2.3
- Drupal 8.2.4
- Drupal 8.2.5
- Drupal 8.2.6
- Drupal 8.2.7
- Drupal 8.2.8
- Drupal 8.3.0
- Drupal 8.3.1
- Drupal 8.3.2
- Drupal 8.3.3
- Drupal 8.3.4
- Drupal 8.3.5
- Drupal 8.3.6
- Drupal 8.3.7
- Drupal 8.4.0
- Drupal 8.4.1
- Drupal 8.4.2
- Drupal 8.4.3
- Drupal 8.4.4