CVE-2026-122006

CriticalCVSS 9.8/10Last modified Nov 12, 2026

Description

The activestorage gem before 8.1.4.1 for Ruby on Rails, when ImageMagick attachment processing occurs, can allow server read and write operations (e.g., reading secret_key_base) because the ImageMagick analyzer runs when a file is attached, and there is not an ImageMagick security policy to block unintended functionality.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-1188

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

Vendor	Product	Versions
rubyonrails	Active Storage	< 8.0.5.2; >= 8.1, < 8.1.4.1

References

Timeline

Published: Nov 4, 2026
Last modified: Nov 12, 2026
NVD status: Awaiting Analysis

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