importantSYS.SOURCE: The Hacker News• 2026-11-04T17:37:04+05:30

Critical Ruby on Rails Vulnerability Enables Arbitrary File Writing Through ImageMagick Uploads

#rails #security #vulnerability

A critical vulnerability in Ruby on Rails' Active Storage component allows unauthenticated attackers to write arbitrary files on servers via crafted ImageMagick uploads. The issue was addressed in versions 8.1.4.1 and 8.0.5.2.

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 the flaw in an advisory and fixed it in versions 8.1.4.1 and 8.0.5.2.

The flaw is in Active Storage, the part of Rails that handles file uploads. Some apps store

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> DEBIAN APT SECURITY UPDATE: MAN-IN-THE-MIDDLE ARBITRARY CODE EXECUTION > INTERACTIVE MAP OF 5000+ 2026 MIDTERM ELECTION ADVERTISEMENTS > CYBERATTACK ON FRENCH NATIONAL BLOOD BANK DISRUPTS OPERATIONS > CRITICAL RUBY ON RAILS VULNERABILITY ENABLES ARBITRARY FILE WRITING THROUGH IMAGEMAGICK UPLOADS > CANVA ANNOUNCES 22% STAFF REDUCTION AMID GROWTH SLOWDOWN AND STRATEGIC RESTRUCTURING > PHP2SHELL VULNERABILITY EXPOSES 40 YEARS OF TECHNICAL DEBT IN CYBERSECURITY > XEN HYPERVISOR VULNERABILITIES ENABLE CROSS-VM MEMORY ACCESS ATTACKS > AGENT RUNTIME SECURITY LIMITATIONS IN UNMONITORED TRAFFIC ENVIRONMENTS > CHINA-ALIGNED THREAT ACTOR EXPLOITS SOGOU INPUT METHOD VULNERABILITY FOR DARKVIGIL DEPLOYMENT > SYNAPTICS APPEARS TO USE LEGAL THREATS TO BLOCK OPEN-SOURCE DISPLAYLINK DRIVER> DEBIAN APT SECURITY UPDATE: MAN-IN-THE-MIDDLE ARBITRARY CODE EXECUTION > INTERACTIVE MAP OF 5000+ 2026 MIDTERM ELECTION ADVERTISEMENTS > CYBERATTACK ON FRENCH NATIONAL BLOOD BANK DISRUPTS OPERATIONS > CRITICAL RUBY ON RAILS VULNERABILITY ENABLES ARBITRARY FILE WRITING THROUGH IMAGEMAGICK UPLOADS > CANVA ANNOUNCES 22% STAFF REDUCTION AMID GROWTH SLOWDOWN AND STRATEGIC RESTRUCTURING > PHP2SHELL VULNERABILITY EXPOSES 40 YEARS OF TECHNICAL DEBT IN CYBERSECURITY > XEN HYPERVISOR VULNERABILITIES ENABLE CROSS-VM MEMORY ACCESS ATTACKS > AGENT RUNTIME SECURITY LIMITATIONS IN UNMONITORED TRAFFIC ENVIRONMENTS > CHINA-ALIGNED THREAT ACTOR EXPLOITS SOGOU INPUT METHOD VULNERABILITY FOR DARKVIGIL DEPLOYMENT > SYNAPTICS APPEARS TO USE LEGAL THREATS TO BLOCK OPEN-SOURCE DISPLAYLINK DRIVER