6.5

CVSS Score

3.0

-

CVSS Score

Basic Information

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CVE-2017-6922

CVE-2017-6922: Drupal core access bypass vulnerability

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.

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2017-6922

CVE-2017-6922:

6.5

CVSS Score

3.0

-

CVSS Score

Basic Information

Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
drupal/core	composer	>= 7.0, < 7.56	7.56
drupal/core	composer	>= 8.0, < 8.3.4	8.3.4
drupal/drupal	composer	>= 8.0, < 8.3.4	8.3.4
drupal/drupal	composer	>= 7.0, < 7.56	7.56

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The vulnerability stems from missing session-based ownership checks for temporary private files. In Drupal's architecture:

file_download() (D7) and FileAccessControlHandler (D8) are core access gatekeepers for file resources
The vulnerability description specifically mentions missing protection for files not permanently attached to content
Private files require both entity access checks AND ownership validation when unattached
The CWE-552 classification confirms this is an access control issue for protected resources
While exact patch details aren't available, these functions are the logical points where session-based ownership checks would be implemented/omitted

Vulnerable functions

Only Mi**o us*rs **n s** t*is s**tion

WAF Protection Rules

WAF Rule

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Reasoning

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6.5

-

Basic Information

Basic Information

Concerned about an active attack path?

CVE-2017-6922: Drupal core access bypass vulnerability

CVE-2017-6922:

6.5

-

Basic Information

Basic Information

Technical Details

Technical Details

Vulnerability IntelligenceMiggo AI

Root Cause Analysis

Vulnerable functions

WAF Protection Rules

WAF Rule

Reasoning

Vulnerability IntelligenceMiggo AI

6.5

6.5

CVE-2017-6922: Drupal core access bypass vulnerability

Basic Information

Basic Information

Technical Details

Vulnerability IntelligenceMiggo AI

Root Cause Analysis

Vulnerable functions

WAF Protection Rules

WAF Rule

Reasoning

Vulnerability Intelligence
Miggo AI

Vulnerability Intelligence
Miggo AI

Vulnerability Intelligence
Miggo AI