{"id":"EM-20261103-GCPF","url":"https://cyber.eventmonitor.net/incident/EM-20261103-GCPF/google-chrome-vulnerability-cve-2026-121063/","type":"cve","title":"Google Chrome Vulnerability (CVE-2026-121063)","subtitle":"CVE-2026-121063","subject":"CVE-2026-121063","status":"Developing","severity":"high","affected":[],"headline":null,"born":"2026-11-03T21:17:10.973Z","firstSignal":"2026-11-03T20:42:40.000Z","lastSignal":"2026-11-03T21:17:10.973Z","updated":"2026-11-09T20:54:22.269Z","revision":1,"life":[{"status":"Born","at":"2026-11-03T21:17:10.973Z","why":"second independent source: C6 NVD CVE API 2.0"},{"status":"Developing","at":"2026-11-03T21:17:10.973Z","why":"signals keep joining"}],"changeLog":[{"at":"2026-11-03T20:42:40.000Z","what":"First signal: C41 Red Hat Security Data"},{"at":"2026-11-03T21:17:10.973Z","what":"Born: second source, C6 NVD CVE API 2.0. Page EM-20261103-GCPF created."},{"at":"2026-11-03T21:17:10.973Z","what":"Severity raised to High by C6"}],"stages":[{"name":"Disclosed","at":"2026-11-03T21:17:10.973Z","detail":"C6 NVD published"},{"name":"Scored","at":"2026-11-03T21:17:10.973Z","detail":"CVSS 8.1 · EPSS 0.2%"},{"name":"Exploited","at":null,"detail":"No exploitation reported"},{"name":"Advisories","at":null,"detail":"None yet"},{"name":"Vendor Response","at":"2026-11-03T20:42:40.000Z","detail":"C41 published"},{"name":"Resolved","at":null,"detail":"After 14 quiet days"}],"signals":[{"at":"2026-11-03T20:42:40.000Z","source":"C41","sourceName":"Red Hat Security Data","role":"Vendor","severity":2,"title":"Red Hat: CVE-2026-121063 (moderate)","text":"chromium-browser: Incorrect authorization in CacheStorage","url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-121063.json"},{"at":"2026-11-03T21:17:10.973Z","source":"C6","sourceName":"NVD CVE API 2.0","role":"Database","severity":3,"title":"CVE-2026-121063 (CVSS 8.1)","text":"Incorrect authorization in CacheStorage in Google Chrome prior to 157.0.8103.38 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: Medium)","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121063"}],"crowd":[],"reference":{"nvd":{"published":"2026-11-03T21:17:10.973","score":8.1,"severity":"HIGH","desc":"Incorrect authorization in CacheStorage in Google Chrome prior to 157.0.8103.38 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: Medium)","product":"","seen":1794257662269},"kev":null,"epss":{"epss":0.00225,"pct":0.13334,"at":1793840810406},"p0":false},"mergedInto":null,"publisher":"Event Monitor Cyber"}