{"id":"UBUNTU-CVE-2026-122006","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.","modified":"2026-11-06T01:00:36.768244070Z","published":"2026-11-05T00:00:00Z","upstream":["CVE-2026-122006"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-122006"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-122006"},{"type":"REPORT","url":"https://github.com/rails/rails/releases/tag/v8.0.5.2"},{"type":"REPORT","url":"https://github.com/rails/rails/releases/tag/v8.1.4.1"},{"type":"REPORT","url":"https://github.com/rails/rails/security/advisories/GHSA-f3w6-w445-fwh9"},{"type":"REPORT","url":"https://github.com/digitalocean/droplet-1-clicks/pull/488"},{"type":"REPORT","url":"https://github.com/rubysec/ruby-advisory-db/pull/1300"}],"affected":[{"package":{"name":"rails","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/rails?arch=source&distro=esm-apps%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:4.1.10-1","2:4.2.5-1","2:4.2.5.1-1","2:4.2.5.2-2","2:4.2.6-1","2:4.2.6-1ubuntu0.1~esm1","2:4.2.6-1ubuntu0.1~esm2"],"ecosystem_specific":{"binaries":[{"binary_name":"rails","binary_version":"2:4.2.6-1ubuntu0.1~esm2"},{"binary_name":"ruby-actionmailer","binary_version":"2:4.2.6-1ubuntu0.1~esm2"},{"binary_version":"2:4.2.6-1ubuntu0.1~esm2","binary_name":"ruby-actionpack"},{"binary_name":"ruby-actionview","binary_version":"2:4.2.6-1ubuntu0.1~esm2"},{"binary_name":"ruby-activejob","binary_version":"2:4.2.6-1ubuntu0.1~esm2"},{"binary_name":"ruby-activemodel","binary_version":"2:4.2.6-1ubuntu0.1~esm2"},{"binary_name":"ruby-activerecord","binary_version":"2:4.2.6-1ubuntu0.1~esm2"},{"binary_name":"ruby-activesupport","binary_version":"2:4.2.6-1ubuntu0.1~esm2"},{"binary_name":"ruby-rails","binary_version":"2:4.2.6-1ubuntu0.1~esm2"},{"binary_name":"ruby-railties","binary_version":"2:4.2.6-1ubuntu0.1~esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-122006.json"}},{"package":{"name":"rails","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/rails?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:4.2.9-2","2:4.2.9-4","2:4.2.10-0ubuntu4","2:4.2.10-0ubuntu4+esm1","2:4.2.10-0ubuntu4+esm2"],"ecosystem_specific":{"binaries":[{"binary_name":"rails","binary_version":"2:4.2.10-0ubuntu4+esm2"},{"binary_name":"ruby-actionmailer","binary_version":"2:4.2.10-0ubuntu4+esm2"},{"binary_name":"ruby-actionpack","binary_version":"2:4.2.10-0ubuntu4+esm2"},{"binary_name":"ruby-actionview","binary_version":"2:4.2.10-0ubuntu4+esm2"},{"binary_name":"ruby-activejob","binary_version":"2:4.2.10-0ubuntu4+esm2"},{"binary_name":"ruby-activemodel","binary_version":"2:4.2.10-0ubuntu4+esm2"},{"binary_name":"ruby-activerecord","binary_version":"2:4.2.10-0ubuntu4+esm2"},{"binary_name":"ruby-activesupport","binary_version":"2:4.2.10-0ubuntu4+esm2"},{"binary_name":"ruby-rails","binary_version":"2:4.2.10-0ubuntu4+esm2"},{"binary_version":"2:4.2.10-0ubuntu4+esm2","binary_name":"ruby-railties"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-122006.json"}},{"package":{"name":"rails","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/rails?arch=source&distro=esm-apps%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:5.2.2.1+dfsg-1ubuntu1","2:5.2.3+dfsg-3","2:5.2.3+dfsg-3ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"rails","binary_version":"2:5.2.3+dfsg-3ubuntu0.1~esm1"},{"binary_name":"ruby-actioncable","binary_version":"2:5.2.3+dfsg-3ubuntu0.1~esm1"},{"binary_name":"ruby-actionmailer","binary_version":"2:5.2.3+dfsg-3ubuntu0.1~esm1"},{"binary_version":"2:5.2.3+dfsg-3ubuntu0.1~esm1","binary_name":"ruby-actionpack"},{"binary_name":"ruby-actionview","binary_version":"2:5.2.3+dfsg-3ubuntu0.1~esm1"},{"binary_version":"2:5.2.3+dfsg-3ubuntu0.1~esm1","binary_name":"ruby-activejob"},{"binary_name":"ruby-activemodel","binary_version":"2:5.2.3+dfsg-3ubuntu0.1~esm1"},{"binary_version":"2:5.2.3+dfsg-3ubuntu0.1~esm1","binary_name":"ruby-activerecord"},{"binary_name":"ruby-activestorage","binary_version":"2:5.2.3+dfsg-3ubuntu0.1~esm1"},{"binary_name":"ruby-activesupport","binary_version":"2:5.2.3+dfsg-3ubuntu0.1~esm1"},{"binary_version":"2:5.2.3+dfsg-3ubuntu0.1~esm1","binary_name":"ruby-rails"},{"binary_version":"2:5.2.3+dfsg-3ubuntu0.1~esm1","binary_name":"ruby-railties"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-122006.json"}},{"package":{"name":"rails","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/rails?arch=source&distro=esm-apps%2Fjammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:6.0.3.7+dfsg-2","2:6.1.4.1+dfsg-8ubuntu2","2:6.1.4.1+dfsg-8ubuntu2+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"rails","binary_version":"2:6.1.4.1+dfsg-8ubuntu2+esm1"},{"binary_version":"2:6.1.4.1+dfsg-8ubuntu2+esm1","binary_name":"ruby-actioncable"},{"binary_name":"ruby-actionmailbox","binary_version":"2:6.1.4.1+dfsg-8ubuntu2+esm1"},{"binary_name":"ruby-actionmailer","binary_version":"2:6.1.4.1+dfsg-8ubuntu2+esm1"},{"binary_version":"2:6.1.4.1+dfsg-8ubuntu2+esm1","binary_name":"ruby-actionpack"},{"binary_version":"2:6.1.4.1+dfsg-8ubuntu2+esm1","binary_name":"ruby-actiontext"},{"binary_name":"ruby-actionview","binary_version":"2:6.1.4.1+dfsg-8ubuntu2+esm1"},{"binary_version":"2:6.1.4.1+dfsg-8ubuntu2+esm1","binary_name":"ruby-activejob"},{"binary_name":"ruby-activemodel","binary_version":"2:6.1.4.1+dfsg-8ubuntu2+esm1"},{"binary_name":"ruby-activerecord","binary_version":"2:6.1.4.1+dfsg-8ubuntu2+esm1"},{"binary_name":"ruby-activestorage","binary_version":"2:6.1.4.1+dfsg-8ubuntu2+esm1"},{"binary_version":"2:6.1.4.1+dfsg-8ubuntu2+esm1","binary_name":"ruby-activesupport"},{"binary_name":"ruby-rails","binary_version":"2:6.1.4.1+dfsg-8ubuntu2+esm1"},{"binary_name":"ruby-railties","binary_version":"2:6.1.4.1+dfsg-8ubuntu2+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-122006.json"}},{"package":{"name":"rails","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/rails?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:6.1.7.3+dfsg-2build1","2:6.1.7.3+dfsg-3"],"ecosystem_specific":{"binaries":[{"binary_name":"rails","binary_version":"2:6.1.7.3+dfsg-3"},{"binary_name":"ruby-actioncable","binary_version":"2:6.1.7.3+dfsg-3"},{"binary_name":"ruby-actionmailbox","binary_version":"2:6.1.7.3+dfsg-3"},{"binary_version":"2:6.1.7.3+dfsg-3","binary_name":"ruby-actionmailer"},{"binary_name":"ruby-actionpack","binary_version":"2:6.1.7.3+dfsg-3"},{"binary_name":"ruby-actiontext","binary_version":"2:6.1.7.3+dfsg-3"},{"binary_version":"2:6.1.7.3+dfsg-3","binary_name":"ruby-actionview"},{"binary_name":"ruby-activejob","binary_version":"2:6.1.7.3+dfsg-3"},{"binary_version":"2:6.1.7.3+dfsg-3","binary_name":"ruby-activemodel"},{"binary_version":"2:6.1.7.3+dfsg-3","binary_name":"ruby-activerecord"},{"binary_name":"ruby-activestorage","binary_version":"2:6.1.7.3+dfsg-3"},{"binary_name":"ruby-activesupport","binary_version":"2:6.1.7.3+dfsg-3"},{"binary_name":"ruby-rails","binary_version":"2:6.1.7.3+dfsg-3"},{"binary_name":"ruby-railties","binary_version":"2:6.1.7.3+dfsg-3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-122006.json"}},{"package":{"name":"rails","ecosystem":"Ubuntu:26.10","purl":"pkg:deb/ubuntu/rails?arch=source&distro=stonking"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:7.2.3+dfsg-2","2:7.2.3.2+dfsg-2"],"ecosystem_specific":{"binaries":[{"binary_name":"rails","binary_version":"2:7.2.3.2+dfsg-2"},{"binary_version":"2:7.2.3.2+dfsg-2","binary_name":"ruby-actioncable"},{"binary_version":"2:7.2.3.2+dfsg-2","binary_name":"ruby-actionmailbox"},{"binary_name":"ruby-actionmailer","binary_version":"2:7.2.3.2+dfsg-2"},{"binary_name":"ruby-actionpack","binary_version":"2:7.2.3.2+dfsg-2"},{"binary_name":"ruby-actiontext","binary_version":"2:7.2.3.2+dfsg-2"},{"binary_version":"2:7.2.3.2+dfsg-2","binary_name":"ruby-actionview"},{"binary_name":"ruby-activejob","binary_version":"2:7.2.3.2+dfsg-2"},{"binary_version":"2:7.2.3.2+dfsg-2","binary_name":"ruby-activemodel"},{"binary_name":"ruby-activerecord","binary_version":"2:7.2.3.2+dfsg-2"},{"binary_version":"2:7.2.3.2+dfsg-2","binary_name":"ruby-activestorage"},{"binary_name":"ruby-activesupport","binary_version":"2:7.2.3.2+dfsg-2"},{"binary_name":"ruby-rails","binary_version":"2:7.2.3.2+dfsg-2"},{"binary_version":"2:7.2.3.2+dfsg-2","binary_name":"ruby-railties"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-122006.json"}},{"package":{"name":"rails","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/rails?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:7.2.2.1+dfsg-7","2:7.2.2.2+dfsg-2","2:7.2.3+dfsg-2"],"ecosystem_specific":{"binaries":[{"binary_name":"rails","binary_version":"2:7.2.3+dfsg-2"},{"binary_version":"2:7.2.3+dfsg-2","binary_name":"ruby-actioncable"},{"binary_name":"ruby-actionmailbox","binary_version":"2:7.2.3+dfsg-2"},{"binary_version":"2:7.2.3+dfsg-2","binary_name":"ruby-actionmailer"},{"binary_name":"ruby-actionpack","binary_version":"2:7.2.3+dfsg-2"},{"binary_version":"2:7.2.3+dfsg-2","binary_name":"ruby-actiontext"},{"binary_name":"ruby-actionview","binary_version":"2:7.2.3+dfsg-2"},{"binary_name":"ruby-activejob","binary_version":"2:7.2.3+dfsg-2"},{"binary_name":"ruby-activemodel","binary_version":"2:7.2.3+dfsg-2"},{"binary_version":"2:7.2.3+dfsg-2","binary_name":"ruby-activerecord"},{"binary_name":"ruby-activestorage","binary_version":"2:7.2.3+dfsg-2"},{"binary_name":"ruby-activesupport","binary_version":"2:7.2.3+dfsg-2"},{"binary_name":"ruby-rails","binary_version":"2:7.2.3+dfsg-2"},{"binary_version":"2:7.2.3+dfsg-2","binary_name":"ruby-railties"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-122006.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}