External risk intelligence

Drupal Advanced Content Feedback Module Forceful Browsing Vulnerability.

CVE advisorySeverity: LOW (CVSS 3.1)

CVE-2026-13232

The vulnerability affects a Drupal module that adds feedback functionality to content. As a web-based CMS plugin intended for user-facing site interactions, it is commonly deployed as part of public-facing web applications, making it accessible via standard internet-reachable web traffic.

Halo Surface Signal: 4 out of 5 — likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

A critical vulnerability has been identified in a Drupal module used for content feedback, potentially allowing unauthorized access and modification of sensitive information. This issue affects how the module handles user authorization, creating a pathway for attackers to bypass security controls and access unintended areas of the system. The main concern at this time is to determine if this specific module is in use and exposed within the organization's environment.

Unauthorized access to content feedback features.
Potential for broad system compromise if exploited.
Verify use and exposure of this specific module.

Attack Path

How an attacker could exploit the issue

This vulnerability allows an unauthenticated attacker to bypass access controls and view sensitive content or perform unauthorized actions on a Drupal site. By leveraging the "admin_feedback" module, an attacker can force their way into areas of the website not intended for public access.

No authentication needed to start.
Bypasses access controls in the module.
Leads to unauthorized access and actions.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability could allow an unauthenticated attacker to access sensitive administrative areas of a Drupal site that uses the Advanced Content Feedback module. When supported by the advisory, this could potentially expose system configuration details or internal data.

Administrative site data.
Unauthorized access to sensitive areas.
Exposure of system configurations.

Operational Fix

Recommended remediation, mitigation, and detection steps

The Drupal Advanced Content Feedback module's authorization flaw necessitates a coordinated response. Application owners and platform teams are likely to lead the effort to identify all instances of the affected module, assess their exposure to external networks, and confirm business criticality. Once prioritized, remediation or mitigation planning can commence, potentially involving coordination with the Drupal community or module maintainers.

Application owners must prioritize remediation.
Verify external reachability and criticality first.
Plan maintenance windows for updates.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

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Frequently asked questions

What is the Drupal Advanced Content Feedback module?

The Advanced Content Feedback module, also known as admin_feedback, is an extension for the Drupal content management system. It provides functionality for site visitors to submit feedback or interact with content. Administrators install it to gather user insights directly within the Drupal interface, making it a common feature for websites that prioritize visitor engagement and content improvement.

What does CWE-863 mean for CVE-2026-13232?

CWE-863 is a weakness classification for Incorrect Authorization. In the context of CVE-2026-13232, this means the software fails to properly check if a user is permitted to perform a specific action or access a certain page. Instead of enforcing the correct security permissions, the module allows users to bypass these checks and interact with administrative or restricted areas of the site that should be protected.

How does an attacker trigger this vulnerability?

An attacker triggers this flaw through Forceful Browsing, which involves directly requesting specific URLs that should be restricted. Because the module fails to verify authorization, the system processes these requests as if the user had legitimate access. Simply navigating to a standard, public-facing page of your site does not trigger the bug; it requires the attacker to proactively target and access unauthorized administrative paths.

Is my site at risk according to Halo Surface Signal?

Halo Surface Signal indicates a high likelihood of risk because the Advanced Content Feedback module is designed for user-facing interactions. Since the module is typically deployed on public-facing web applications to collect feedback, it is often reachable via standard internet traffic. If your Drupal site is accessible from the internet, the module is likely exposed to these network-based requests.

What should I do if I use this Drupal module?

Your first step is to confirm if your environment contains the affected module version (0.0.0 through 2.8.0). Coordinate with your application or platform teams to identify every instance of the module in use. Once identified, evaluate the criticality of the site and monitor official Drupal community channels for maintenance updates or specific security guidance to address the authorization bypass.

References

www.drupal.org/sa-contrib-2026-052

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.