6.5

CVSS Score

3.1

-

CVSS Score

Basic Information

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CVE-2023-31250

CVE-2023-31250: Access bypass in Drupal core

The file download facility doesn't sufficiently sanitize file paths in certain situations. This may result in users gaining access to private files that they should not have access to. Some sites may require configuration changes following this security release. Review the release notes for your Drupal version if you have issues accessing private files after updating.

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2023-31250

CVE-2023-31250:

6.5

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
drupal/core	composer	>= 10.0.0, < 10.0.8	10.0.8
drupal/core	composer	>= 9.5.0, < 9.5.8	9.5.8
drupal/core	composer	>= 9.0.0, < 9.4.14	9.4.14
drupal/core	composer	>= 7.0.0, < 7.96	7.96

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The vulnerability stems from improper path sanitization in Drupal's file handling. The FileDownloadController::download method is the entry point for file downloads and would process user-provided URIs. If it fails to properly sanitize paths (e.g., allowing directory traversal sequences), combined with FileSystemInterface::realpath not correctly resolving the absolute path, attackers could bypass access controls. These components are central to file access authorization and path resolution, aligning with the CWE-863 (Incorrect Authorization) classification. The confidence is high because these functions directly handle file URI processing and access checks, which matches the vulnerability's description of insufficient sanitization leading to access bypass.

Vulnerable functions

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Vulnerability Intelligence
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WAF Protection Rules

WAF Rule

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Reasoning

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