{"id":"EM-20261104-1UKI","url":"https://cyber.eventmonitor.net/incident/EM-20261104-1UKI/critical-activestorage-vulnerability-cve-2026-122006/","type":"cve","title":"Critical activestorage Vulnerability (CVE-2026-122006)","subtitle":"CVE-2026-122006","subject":"CVE-2026-122006","status":"Developing","severity":"critical","affected":[],"headline":null,"born":"2026-11-04T15:17:42.940Z","firstSignal":"2026-11-04T14:12:17.000Z","lastSignal":"2026-11-04T15:17:42.940Z","updated":"2026-11-05T14:44:18.988Z","revision":1,"life":[{"status":"Born","at":"2026-11-04T15:17:42.940Z","why":"second independent source: C6 NVD CVE API 2.0"},{"status":"Developing","at":"2026-11-04T15:17:42.940Z","why":"signals keep joining"}],"changeLog":[{"at":"2026-11-04T14:12:17.000Z","what":"First signal: C41 Red Hat Security Data"},{"at":"2026-11-04T15:17:42.940Z","what":"Born: second source, C6 NVD CVE API 2.0. Page EM-20261104-1UKI created."},{"at":"2026-11-04T15:17:42.940Z","what":"Severity raised to Critical by C6"}],"stages":[{"name":"Disclosed","at":"2026-11-04T15:17:42.940Z","detail":"C6 NVD published"},{"name":"Scored","at":"2026-11-04T15:17:42.940Z","detail":"CVSS 9.8 · EPSS 0.7%"},{"name":"Exploited","at":null,"detail":"No exploitation reported"},{"name":"Advisories","at":null,"detail":"None yet"},{"name":"Vendor Response","at":"2026-11-04T14:12:17.000Z","detail":"C41 published"},{"name":"Resolved","at":null,"detail":"After 14 quiet days"}],"signals":[{"at":"2026-11-04T14:12:17.000Z","source":"C41","sourceName":"Red Hat Security Data","role":"Vendor","severity":3,"title":"Red Hat: CVE-2026-122006 (important)","text":"activestorage: activestorage: arbitrary file read and write via ImageMagick attachment analysis","url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-122006.json"},{"at":"2026-11-04T15:17:42.940Z","source":"C6","sourceName":"NVD CVE API 2.0","role":"Database","severity":4,"title":"CVE-2026-122006 (CVSS 9.8)","text":"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.","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-122006"}],"crowd":[],"reference":{"nvd":{"published":"2026-11-04T15:17:42.940","score":9.8,"severity":"CRITICAL","desc":"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 un","product":"","seen":1793837141981},"kev":null,"epss":{"epss":0.0069,"pct":0.52942,"at":1793889858988},"p0":false},"mergedInto":null,"publisher":"Event Monitor Cyber"}