CVE-2026-13232 Overview
CVE-2026-13232 is an Incorrect Authorization vulnerability [CWE-863] in the Drupal Advanced Content Feedback module, also known as admin_feedback. The flaw affects all versions from 0.0.0 through 2.8.0. Authenticated attackers with low privileges can perform forceful browsing to reach resources that authorization checks should restrict. Successful exploitation impacts integrity but does not affect confidentiality or availability of the underlying Drupal site.
Critical Impact
A low-privileged, authenticated attacker can bypass authorization controls in the admin_feedback module and access restricted functionality through forceful browsing.
Affected Products
- Drupal Advanced Content Feedback (admin_feedback) module
- All versions from 0.0.0 up to and including 2.8.0
- Drupal sites running the contributed admin_feedback module
Discovery Timeline
- 2026-07-10 - CVE-2026-13232 published to the National Vulnerability Database (NVD)
- 2026-07-13 - Last updated in NVD database
Technical Details for CVE-2026-13232
Vulnerability Analysis
The vulnerability is classified as Incorrect Authorization [CWE-863]. The admin_feedback module fails to consistently enforce access checks on protected routes or actions. Attackers exploit this weakness through forceful browsing, requesting URLs or endpoints directly without going through intended navigation paths. Because the module does not validate that the requesting user is authorized for the target resource, the request succeeds.
The attack requires network access and authentication with low privileges. Attack complexity is high, indicating specific conditions must be met for reliable exploitation. The impact is limited to integrity, meaning attackers may modify or interact with restricted data but cannot directly extract sensitive information or disrupt service through this flaw.
Root Cause
The root cause is missing or incomplete authorization enforcement in the admin_feedback module's request handling logic. The module relies on obscurity of URLs or client-side controls rather than server-side permission checks. When a request bypasses intended entry points, the authorization decision defaults to allowing the action rather than denying it.
Attack Vector
An authenticated user with minimal permissions issues HTTP requests directly to admin_feedback endpoints that should require elevated privileges. Because the module does not verify the caller's role or capability against the requested resource, forceful browsing returns restricted content or triggers restricted actions. No user interaction is required. Refer to the Drupal Security Advisory for module-specific technical details.
Detection Methods for CVE-2026-13232
Indicators of Compromise
- Web server access logs showing authenticated low-privilege accounts requesting admin_feedback administrative paths
- Unexpected modifications to feedback records or configuration performed by non-administrative users
- HTTP 200 responses to admin_feedback endpoints from user accounts that should receive 403 Forbidden
Detection Strategies
- Review Drupal watchdog logs for admin_feedback actions attributed to users lacking the required roles
- Correlate authenticated session activity against expected role-based access patterns for the module
- Alert on direct requests to admin_feedback administrative URLs that skip normal referrer chains
Monitoring Recommendations
- Enable verbose logging for the admin_feedback module and ship logs to a centralized SIEM
- Baseline normal access patterns for the module and flag deviations from low-privilege accounts
- Monitor for role assignment changes and audit feedback-related database tables for unauthorized writes
How to Mitigate CVE-2026-13232
Immediate Actions Required
- Upgrade the admin_feedback module to a version later than 2.8.0 once the maintainer publishes a fix
- Audit user roles and remove unnecessary permissions from low-privilege accounts on affected sites
- Review recent activity in the admin_feedback module for signs of unauthorized access or data modification
Patch Information
Consult the Drupal Security Advisory SA-CONTRIB-2026-052 for the fixed release version and detailed remediation guidance. Apply the patched module release through the standard Drupal module update workflow and clear caches after upgrading.
Workarounds
- Disable the admin_feedback module until a patched version is installed if the functionality is not business-critical
- Restrict access to admin_feedback administrative paths at the web server or reverse proxy layer using IP allowlists
- Apply Drupal permission tightening so only trusted roles can authenticate to sites hosting the module
# Configuration example: disable the module via Drush until patched
drush pm:uninstall admin_feedback
drush cache:rebuild
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
