Access Control Flaw in Drupal Image Module

CVE-2022-25275

Summary

The Image module in Drupal exhibits an access control issue that may allow unauthorized access to image files not stored in the standard public directory. Specifically, when generating derivative images, the module fails to properly verify access for files housed in custom file systems or schemes provided by certain contributed modules. This flaw arises when the site's configuration is set to allow insecure file derivatives, which should be avoided as the default configuration is set to disallow such practices. Administrators should review their settings post-update, especially if customization has been applied, to maintain file security.

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