{"id":"CVE-2026-103630","title":"Use after free in FedCM in Google Chrome prior to 154.0.8037.97 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page","summary":"Use after free in FedCM in Google Chrome prior to 154.0.8037.97 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)","severity":"critical","cvss":9.6,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","cwe":["CWE-416"],"vendor":"google","product":"chrome","affected":["chrome < 154.0.8037.97"],"patched":["chrome 154.0.8037.97"],"published":"2026-10-02","updated":"2026-10-06","sourceUpdated":"2026-10-06T16:22:17.147","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-103630","references":[{"url":"https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop.html","label":"chrome-cve-admin@google.com"},{"url":"https://issues.chromium.org/issues/557323166","label":"chrome-cve-admin@google.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-103630.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-103630"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-103630"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00325,"epssPercentile":0.25377,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-03T03:55:38.414836Z"},"scores":{"nvd":9.6,"vendor":8.8,"adp":9.6},"ingestedAt":"2026-10-02T16:22:59.525Z","slug":"CVE-2026-103630","body":"## Overview\n\nUse after free in FedCM in Google Chrome prior to 154.0.8037.97 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)\n\n## Affected\n\n- `chrome < 154.0.8037.97`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `chrome 154.0.8037.97`\n\n## Vendor advisories\n\n- **Red Hat VEX** · updated 2026-10-03 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-103630.json)","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":52.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":216479,"id":"CVE-2026-103630","ts":1791298965872,"field":"cvss","old":"8.8","new":"9.6"},{"seq":216478,"id":"CVE-2026-103630","ts":1791298965872,"field":"severity","old":"high","new":"critical"},{"seq":215232,"id":"CVE-2026-103630","ts":1791014420834,"field":"cvss","old":null,"new":"8.8"},{"seq":215231,"id":"CVE-2026-103630","ts":1791014420834,"field":"severity","old":"none","new":"high"}]}