{"id":"EM-20261112-26LZ","url":"https://cyber.eventmonitor.net/incident/EM-20261112-26LZ/critical-rubygem-safemode-vulnerability-cve-2026-107360/","type":"cve","title":"Critical rubygem-safemode Vulnerability (CVE-2026-107360)","subtitle":"CVE-2026-107360","subject":"CVE-2026-107360","status":"Developing","severity":"critical","affected":[],"headline":null,"born":"2026-11-12T20:18:14.907Z","firstSignal":"2026-11-12T18:46:45.000Z","lastSignal":"2026-11-12T20:18:14.907Z","updated":"2026-11-13T00:40:17.050Z","revision":1,"life":[{"status":"Born","at":"2026-11-12T20:18:14.907Z","why":"second independent source: C6 NVD CVE API 2.0"},{"status":"Developing","at":"2026-11-12T20:18:14.907Z","why":"signals keep joining"}],"changeLog":[{"at":"2026-11-12T18:46:45.000Z","what":"First signal: C41 Red Hat Security Data"},{"at":"2026-11-12T20:18:14.907Z","what":"Born: second source, C6 NVD CVE API 2.0. Page EM-20261112-26LZ created."}],"stages":[{"name":"Disclosed","at":"2026-11-12T20:18:14.907Z","detail":"C6 NVD published"},{"name":"Scored","at":"2026-11-12T20:18:14.907Z","detail":"CVSS 9.6"},{"name":"Exploited","at":null,"detail":"No exploitation reported"},{"name":"Advisories","at":null,"detail":"None yet"},{"name":"Vendor Response","at":"2026-11-12T18:46:45.000Z","detail":"C41 published"},{"name":"Resolved","at":null,"detail":"After 14 quiet days"}],"signals":[{"at":"2026-11-12T18:46:45.000Z","source":"C41","sourceName":"Red Hat Security Data","role":"Vendor","severity":4,"title":"Red Hat: CVE-2026-107360 (critical)","text":"rubygem-safemode: safemode: Jail allow-list bypass via op-assign expressions","url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-107360.json"},{"at":"2026-11-12T20:18:14.907Z","source":"C6","sourceName":"NVD CVE API 2.0","role":"Database","severity":4,"title":"CVE-2026-107360 (CVSS 9.6)","text":"A flaw was found in rubygem-safemode. Compound assignment expressions in sandboxed code are evaluated without mediating method calls through the Jail allow-list. An authenticated attacker who can supply template content can invoke arbitrary no-argument methods on objects exposed to the template renderer without Jail mediation, including destructive operations such as host deletion and disclosure of non-allow-listed object state.","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-107360"}],"crowd":[],"reference":{"nvd":{"published":"2026-11-12T20:18:14.907","score":9.6,"severity":"CRITICAL","desc":"A flaw was found in rubygem-safemode. Compound assignment expressions in sandboxed code are evaluated without mediating method calls through the Jail allow-list. An authenticated attacker who can supply template content can invoke arbitrary no-argument methods on objects exposed to the template…","product":"","seen":1794530417050},"kev":null,"epss":null,"p0":false},"mergedInto":null,"publisher":"Event Monitor Cyber"}