CVE-2017-6922

In Drupal core 8.x prior to 8.3.4 and Drupal core 7.x prior to 7.56; Private files that have been uploaded by an anonymous user but not permanently attached to content on the site should only be visible to the anonymous user that uploaded them, rather than all anonymous users. Drupal core did not previously provide this protection, allowing an access bypass vulnerability to occur. This issue is mitigated by the fact that in order to be affected, the site must allow anonymous users to upload files into a private file system.

CVE-2017-6922 has a CVSS score of 6.5 (Medium). The vector is network-reachable, low privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (7.56, 8.3.4); upgrading removes the vulnerable code path.

Kodem intelligence

1. What is CVE-2017-6922? CVE-2017-6922 is a medium-severity security vulnerability in drupal/core (composer), affecting versions >= 7.0, < 7.56. It is fixed in 7.56, 8.3.4.
2. How severe is CVE-2017-6922? CVE-2017-6922 has a CVSS score of 6.5 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
3. Which packages are affected by CVE-2017-6922?
   • drupal/core (composer) (versions >= 7.0, < 7.56)
   • drupal/drupal (composer) (versions >= 8.0, < 8.3.4)
4. Is there a fix for CVE-2017-6922? Yes. CVE-2017-6922 is fixed in 7.56, 8.3.4. Upgrade to this version or later.
5. Is CVE-2017-6922 exploitable, and should I be worried? Whether CVE-2017-6922 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
6. What actually determines whether CVE-2017-6922 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
7. How do I fix CVE-2017-6922?
   • Upgrade drupal/core to 7.56 or later
   • Upgrade drupal/core to 8.3.4 or later
   • Upgrade drupal/drupal to 8.3.4 or later
   • Upgrade drupal/drupal to 7.56 or later

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