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The vulnerability is an improper check for unusual or exceptional conditions within Drupal’s routing system. It allows for forceful browsing, where an attacker can directly access a route or form that should only be available after a specific sequence of actions. The flaw occurs when the access control logic for a particular page or function fails to verify the application’s full state, relying instead on the assumption that users arrive via the intended UI workflow. This bypasses the expected conditional checks, granting unauthorized access to functionality or information. The system does not adequately validate the context of the request, missing a crucial check for the prerequisite conditions that should be met before the resource is made available.
Platform: Drupal Core
Version: < 10.4.9
Vulnerability : Forceful Browsing
Severity: Low
date: 2025-11-18
Prediction: 2025-11-25
What Undercode Say:
`curl -s “http://target/restricted-path”`
`drush php-eval “echo \Drupal::service(‘path_processor_manager’)->processOutbound(‘/node/1’);”`
`grep -r “access_callback” modules/custom/`
How Exploit:
Directly request restricted form URLs without submitting prerequisite forms. Use tools like Burp Suite to replay requests to administrative endpoints that lack state validation. Manually browse to `/admin/config/development/configuration/single/export` without following the intended navigation.
Protection from this CVE
Update to patched versions. Implement custom route access checks. Use state tokens for multi-step forms. Review custom modules for similar logic flaws.
Impact:
Unauthorized access to forms. Information disclosure. Bypass of intended workflows.
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Sources:
Reported By: github.com
Extra Source Hub:
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