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The Hacker News
4 Nov 2026

Critical Rails Flaw Lets Attackers Write Server Files via Crafted ImageMagick Uploads

A critical flaw in Ruby on Rails could allow an unauthenticated attacker to write arbitrary files on an app's server by uploading a crafted file if the app processes uploads using ImageMagick. The Rails project disclosed

// analyst note

This briefing summarises reporting from The Hacker News. 90@! Ltd curates and rewrites third-party cybersecurity reporting for UK defenders. For the full technical write-up, read the original source.

Curated by 90@! Ltd from The Hacker News. Read the original for full technical detail.

Read original at The Hacker News

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