CVE-2026-122006

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    CVE-2026-122006

    Published: 4 Nov 2026Last Modified: 7 Nov 2026

    Summary:

    Details: 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.

    References: https://github.com/alan-turing-institute/cyber-threat-observatory/blob/main/reports/2026-11-04/TIER_2_CVE-2026-122006.md, https://github.com/rails/rails/releases/tag/v8.0.5.2, https://github.com/rails/rails/releases/tag/v8.1.4.1, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/122xxx/CVE-2026-122006.json, https://github.com/rails/rails/security/advisories/GHSA-f3w6-w445-fwh9, https://nvd.nist.gov/vuln/detail/CVE-2026-122006, https://github.com/digitalocean/droplet-1-clicks/pull/488, https://github.com/rubysec/ruby-advisory-db/pull/1300

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -3f290b759c8e2ffe7c257951b1255740751355e4

    Affected versions

    v8.0.5.1
    v8.0.5
    v8.0.4
    v8.0.3
    v8.0.2
    v8.0.1
    v8.0.0
    v8.0.0.rc2
    v8.0.0.rc1
    v8.0.0.beta1

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-122006 | CVE-DB