CVE-2025-24293

Technical Description

# Active Storage allowed transformation methods potentially unsafe

Active Storage attempts to prevent the use of potentially unsafe image

transformation methods and parameters by default.

The default allowed list contains three methods allow for the circumvention

of the safe defaults which enables potential command injection

vulnerabilities in cases where arbitrary user supplied input is accepted as

valid transformation methods or parameters.

Impact

------

This vulnerability impacts applications that use Active Storage with the image_processing processing gem in addition to mini_magick as the image processor.

Vulnerable code will look something similar to this:

```

<%= image_tag blob.variant(params[:t] => params[:v]) %>

```

Where the transformation method or its arguments are untrusted arbitrary input.

All users running an affected release should either upgrade or use one of the workarounds immediately.

Workarounds

-----------

Consuming user suppli

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References