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The Drupal project has released a patch to fix a critical access bypass vulnerability that could put websites at risk of hacking.
The vulnerability does not have the highest severity level based on Drupal's rating system, but is serious enough that the platform's developers decided to also release a patch for a version of the content management system that's no longer officially supported.
Successful exploitation of the vulnerability can lead to a complete compromise of data confidentiality and website integrity, but only Drupal-based websites with certain configurations are affected.
To be vulnerable, a website needs to have the RESTful Web Services enabled and to allow PATCH requests. Furthermore, the attacker needs to be able to register a new account on the website or to gain access to an existing one, regardless of its privileges.
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