CVE-2017-6930 Drupal access bypass vulnerability

What is CVE-2017-6930?

CVE-2017-6930 is a high-severity authentication bypass vulnerability in Drupal Drupal, published on 1 Mar 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In Drupal versions 8.4.x versions before 8.4.5 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 can 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().

Which versions are affected by CVE-2017-6930?

4 open source packages ship an affected version, including drupal/core and drupal/drupal. It affects 1 product.

Products include Drupal Drupal.

How do I fix CVE-2017-6930?

Upgrade drupal/core to 8.4.5 or later.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2017-6930 being exploited?

There is no known exploitation of CVE-2017-6930 in the wild and no public exploit code.

Other vulnerabilities in Drupal Drupal

• CVE-2026-9082 Drupal Core SQL Injection Exploited Critical 9.8
• CVE-2020-13671 Drupal core Un-restricted Upload of File Exploited High 8.8
• CVE-2019-6340 Drupal Core Remote Code Execution Exploited High 8.1
• CVE-2009-3352 Other in n/a Critical 10.0
• CVE-2024-55636 Drupal core - Less critical - Gadget chain - SA-CORE-2024-006 Critical 9.8

All Drupal Drupal vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-3327-jr93-7hq3.