CVE-2026-13240 in Paragraphs
Summary
by MITRE • 07/11/2026
Missing Authorization vulnerability in Drupal Paragraphs allows Forceful Browsing. This issue affects Paragraphs versions: from 0.0.0 to 1.21.0.
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Analysis
by VulDB Data Team • 07/11/2026
The missing authorization vulnerability in Drupal Paragraphs represents a critical security flaw that enables forceful browsing attacks through improper access control mechanisms. This vulnerability exists within the paragraphs module version range from 0.0.0 to 1.21.0, creating an exploitable condition where authenticated users can bypass intended access restrictions and gain unauthorized access to paragraph entities. The flaw stems from insufficient validation of user permissions during paragraph entity operations, allowing malicious actors to manipulate URLs or API endpoints to access content they should not be authorized to view.
This technical vulnerability manifests as a failure in the module's authorization checking system, where the application does not properly verify whether users possess adequate permissions before serving paragraph data. The issue aligns with CWE-285, which addresses insufficient authorization problems in software systems, and represents a direct violation of the principle of least privilege. Attackers can exploit this weakness by crafting requests that target specific paragraph entities, potentially gaining access to sensitive content such as unpublished revisions, private paragraphs, or confidential data stored within paragraph structures.
The operational impact of this vulnerability extends beyond simple information disclosure, as it can lead to unauthorized data access and potential data manipulation. When exploited, the forceful browsing capability allows attackers to traverse paragraph entity paths that should be restricted to specific user roles or permissions. This creates opportunities for privilege escalation and can result in exposure of sensitive organizational information, particularly in environments where Drupal Paragraphs module is used to manage content with varying access levels. The vulnerability affects not only content administrators but also regular users who might gain access to restricted paragraph data through manipulated requests.
Organizations utilizing affected Drupal Paragraphs versions should immediately implement mitigations including updating to patched versions and ensuring proper access control configurations are in place. The recommended approach involves validating user permissions at every interaction point with paragraph entities, implementing robust input validation for URL parameters, and configuring appropriate role-based access controls. Security teams should also consider implementing network-level protections such as web application firewalls that can detect and block suspicious patterned requests targeting paragraph entities. Additionally, regular security audits of Drupal installations should include verification of module permissions and access control configurations to prevent similar authorization bypass vulnerabilities from persisting in the system architecture.
This vulnerability demonstrates the importance of maintaining up-to-date software components and proper authorization implementation within content management systems. The ATT&CK framework categorizes this issue under privilege escalation techniques, specifically targeting the 'Valid Accounts' and 'Exploitation for Privilege Escalation' tactics where attackers leverage legitimate access to gain increased privileges. Organizations should implement comprehensive monitoring solutions that can detect unusual access patterns or unauthorized attempts to browse paragraph entities, as these activities may indicate exploitation attempts. The remediation process requires not only patching the vulnerable module but also conducting thorough security assessments of all Drupal modules to identify potential similar authorization flaws that could be exploited in similar attack vectors.