CVE-2025-7031 Overview
CVE-2025-7031 is a Missing Authentication for Critical Function vulnerability [CWE-306] in the Drupal Config Pages Viewer module. The flaw affects all versions from 0.0.0 before 1.0.4 and allows unauthenticated network attackers to exploit incorrectly configured access control security levels. The module fails to enforce authentication on functionality that should be restricted, exposing configuration page data to unauthorized users.
Critical Impact
Unauthenticated remote attackers can access configuration data exposed through the Config Pages Viewer module when access controls are misconfigured, leading to information disclosure on affected Drupal sites.
Affected Products
- Drupal Config Pages Viewer module versions prior to 1.0.4
- Drupal sites with the Config Pages Viewer contributed module installed
- Any Drupal deployment relying on the module for restricted configuration page display
Discovery Timeline
- 2025-07-08 - CVE-2025-7031 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-7031
Vulnerability Analysis
The Config Pages Viewer module is a Drupal contributed module that renders configuration pages defined by the Config Pages framework. The vulnerability stems from the module's failure to verify authentication before serving critical functionality. Attackers can reach exposed endpoints over the network without any credentials or user interaction.
The issue is classified under [CWE-306] Missing Authentication for Critical Function. The scope is limited to confidentiality impact, meaning the flaw exposes information rather than enabling modification or service disruption. The EPSS probability score is 0.265% at the 18th percentile, indicating low observed exploitation activity in the wild.
Root Cause
The root cause is an incorrectly configured access control layer in the module's routing or controller logic. The module defines routes or view handlers without attaching appropriate permission checks or authentication requirements. As a result, requests bypass Drupal's access control system and reach the underlying configuration page rendering logic.
Attack Vector
Exploitation requires only network access to the target Drupal site. The attacker sends an unauthenticated HTTP request to the module's exposed paths and receives content that should require permission. No privileges, user interaction, or specialized tooling are required. See the Drupal Security Advisory 2025-086 for authoritative technical details.
Detection Methods for CVE-2025-7031
Indicators of Compromise
- Anonymous HTTP GET requests to Config Pages Viewer module routes returning HTTP 200 responses with configuration content
- Access logs showing requests to config page paths from IP addresses without prior authenticated sessions
- Unusual volume of requests to Drupal module paths associated with config_pages_viewer
Detection Strategies
- Audit Drupal access logs for anonymous requests targeting paths served by the Config Pages Viewer module
- Compare installed module versions against the fixed release 1.0.4 using drush pm:list or the Drupal admin interface
- Review Drupal watchdog logs for access denied events that changed pattern after the module was installed or updated
Monitoring Recommendations
- Enable and centralize web server and Drupal application logs for continuous review of anonymous access patterns
- Monitor outbound content sizes on module paths to identify potential data exposure
- Track Drupal contributed module inventory and alert when versions fall below the vendor-published fixed release
How to Mitigate CVE-2025-7031
Immediate Actions Required
- Upgrade the Config Pages Viewer module to version 1.0.4 or later on all affected Drupal sites
- Review Drupal permissions for anonymous and authenticated user roles and remove access to configuration viewing functionality that should be restricted
- Inspect access logs for prior anonymous access to module routes and assess exposed configuration data
Patch Information
The vendor released Config Pages Viewer version 1.0.4, which addresses the missing authentication check. Site administrators should apply the update through the standard Drupal module update workflow. Full remediation details are available in the Drupal Security Advisory 2025-086.
Workarounds
- Disable the Config Pages Viewer module until the patched version is deployed
- Restrict access to module routes at the reverse proxy or web application firewall layer for unauthenticated clients
- Remove or lock down configuration pages that contain sensitive data until the upgrade is completed
# Configuration example: update the module using Drush
drush pm:update config_pages_viewer
drush cache:rebuild
# Or disable the module as a temporary workaround
drush pm:uninstall config_pages_viewer
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
