CVE-2025-24293
HighCVSS 8.1Exploitation Probability (EPSS)
High risk82th percentile - higher than 82% of all known CVEs
Summary
A vulnerability in Active Storage allows bypassing default security restrictions for image transformation methods, potentially leading to command injection when user-supplied input is accepted as transformation methods or parameters. The issue affects applications using Active Storage with the image_processing gem and mini_magick as the image processor.
Risk Assessment
The organization is at risk of remote code execution (command injection) through manipulation of image transformation methods, which could lead to server compromise or data exfiltration.
Recommendation
Immediately upgrade Active Storage to a patched version or apply the workaround by strictly validating user-supplied input and deploying a strong ImageMagick security policy.
Other vulnerabilities in Active Storage
Original NVD description (English source)
# 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 supplied input for image transformation methods or their parameters is unsupported behavior and should be considered dangerous. Strict validation of user supplied methods and parameters should be performed as well as having a strong [ImageMagick security policy](https://imagemagick.org/script/security-policy.php) deployed. Credits ------- Thank you [lio346](https://hackerone.com/lio346) for reporting this!