CVE-2026-58590 in FlowDrop
Summary
by MITRE • 07/11/2026
Missing Authorization vulnerability in Drupal FlowDrop allows Forceful Browsing. This issue affects FlowDrop versions: from 0.0.0 to 1.6.0.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 07/11/2026
The Missing Authorization vulnerability in Drupal FlowDrop represents a critical security flaw that enables unauthorized access to protected resources through Forceful Browsing techniques. This vulnerability exists within the FlowDrop module for Drupal, specifically affecting versions ranging from 0.0.0 through 1.6.0, creating a pathway for attackers to bypass intended access controls and gain unauthorized system access. The issue stems from insufficient validation of user permissions during resource access attempts, allowing malicious actors to directly navigate to restricted content without proper authentication or authorization checks.
This technical flaw operates by exploiting the absence of proper authorization mechanisms within the FlowDrop module's request handling process. When users attempt to access specific resources through the module, the system fails to verify whether the requesting entity has appropriate privileges to view or interact with the targeted content. The vulnerability manifests as a direct consequence of inadequate input validation and permission enforcement, creating an attack surface where unauthorized parties can enumerate and access protected resources simply by knowing the resource paths or using automated tools to discover accessible endpoints.
The operational impact of this vulnerability extends beyond simple unauthorized access, potentially enabling attackers to execute a wide range of malicious activities including data exfiltration, privilege escalation, and system compromise. Attackers leveraging this vulnerability can systematically browse through protected content without proper authentication, potentially accessing sensitive information, user data, or administrative resources that should remain restricted. The Forceful Browsing technique allows threat actors to bypass normal access controls by directly requesting specific URLs or resources, effectively circumventing the intended authorization flow that normally validates user credentials and permissions before granting access.
From a cybersecurity perspective, this vulnerability aligns with CWE-862 - "Missing Authorization" which specifically addresses the absence of proper access control checks in software applications. The issue also maps to ATT&CK technique T1078 - "Valid Accounts" as attackers can leverage the bypassed authorization mechanisms to maintain persistent access to systems without detection. Organizations running affected Drupal installations face significant risk exposure, particularly those with sensitive data or administrative functions accessible through FlowDrop. The vulnerability's impact is compounded by its potential for automated exploitation, where scanning tools can quickly identify and exploit the missing authorization checks across multiple resources.
Mitigation strategies should prioritize immediate patching of affected versions to address the core authorization flaw within FlowDrop. Organizations must implement comprehensive access control measures including proper authentication verification, role-based access controls, and regular security audits of all Drupal modules. Network segmentation and monitoring solutions should be deployed to detect anomalous access patterns that may indicate exploitation attempts. Additionally, implementing web application firewalls and enforcing strict input validation can help prevent direct resource access attempts. Regular security assessments and vulnerability scanning should be conducted to identify similar authorization gaps in other system components, while maintaining updated security policies that address unauthorized access prevention and incident response procedures for potential exploitation scenarios.