Security
Critical Rails Flaw Lets Attackers Write Server Files via Crafted ImageMagick Uploads
The Hacker News·November 4, 2026·1 min read
A critical Ruby on Rails flaw allows unauthenticated attackers to write arbitrary files on a server by uploading a crafted file processed with ImageMagick. The issue lies in Active Storage, Rails' file upload component. Rails fixed it in versions 8.1.4.1 and 8.0.5.2. Some apps store uploads in ways that increase exposure.
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