{"id":"CVE-2026-113256","title":"chromium-browser: chromium-browser: arbitrary code execution inside sandbox via crafted HTML page (CVE-2026-113256)","summary":"A flaw was found in chromium-browser. A use-after-free vulnerability in the Permissions component allows a remote attacker to execute arbitrary code within the browser's sandbox. An attacker could exploit this flaw by enticing a user to vi…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cvssSource":"vendor","cwe":["CWE-416"],"vendor":"Red Hat","product":"Chrome","affected":["Chrome >= 156.0.8078.47 < 156.0.8078.47"],"published":"2026-10-20","updated":"2026-10-20","sourceUpdated":"2026-10-20T23:26:44+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-113256.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-113256.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-113256"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-113256"},{"url":"https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_02018666648.html"},{"url":"https://issues.chromium.org/issues/498748871"}],"tags":["csaf","vex","red-hat","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-20T22:56:09.907948Z"},"ingestedAt":"2026-10-20T21:19:21.172Z","epss":0.00425,"epssPercentile":0.36629,"slug":"CVE-2026-113256","body":"## Overview\n\nA flaw was found in chromium-browser. A use-after-free vulnerability in the Permissions component allows a remote attacker to execute arbitrary code within the browser's sandbox. An attacker could exploit this flaw by enticing a user to visit a specially crafted HTML page.\n\n## Vendor advisories\n\n- **Red Hat VEX** · updated 2026-10-20 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-113256.json)\n\n**chromium-browser: chromium-browser: arbitrary code execution inside sandbox via crafted HTML page**. Released 2026-10-20.\n\nNot affected:\n\n- All currently supported Red Hat products\n\n## Remediation\n\nRefer to the advisory for fix availability.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":226413,"id":"CVE-2026-113256","ts":1792539298775,"field":"cvss","old":null,"new":"8.8"},{"seq":226412,"id":"CVE-2026-113256","ts":1792539298775,"field":"severity","old":"none","new":"high"}]}