{"id":"CVE-2026-121068","kind":"vulnerability","aliases":["CVE-2026-121068"],"related":[],"title":"Chrome: V8 type confusion lets a crafted web page run code","description":"Type confusion in V8 in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)","summary":"A type confusion bug in the V8 JavaScript engine of Google Chrome, fixed in version 157.0.8103.38, lets a remote attacker run arbitrary code inside the browser sandbox via a crafted HTML page. Chromium rates it High severity, and the sources give no exploitation status.","severity":"high","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browsers","chrome","endpoints","runtime"],"not_affected_if":["already-updated","no-chrome"],"how_to_check":"- Open Chrome's version page (chrome://settings/help) and compare the version to `157.0.8103.38`\n- Check the Chrome version on managed machines with your device management tool; unknown for other tooling","fix":"- Google Chrome: move to `157.0.8103.38` or later","status":"open","published_at":"2026-11-03T21:17:11+00:00","first_seen_at":"2026-11-03T21:19:11+00:00","triaged_at":"2026-11-03T21:27:01+00:00","updated_at":"2026-11-03T21:27:01+00:00","category":"runtime","confidence":0.8,"triage":{"at":"2026-11-03T21:27:01Z","model":"claude-haiku-5-5","output":{"fix":"- Google Chrome: move to `157.0.8103.38` or later","reach":"internet","title":"Chrome: V8 type confusion lets a crafted web page run code","impact":"high","summary":"A type confusion bug in the V8 JavaScript engine of Google Chrome, fixed in version 157.0.8103.38, lets a remote attacker run arbitrary code inside the browser sandbox via a crafted HTML page. Chromium rates it High severity, and the sources give no exploitation status.","audience":"everyone","category":"runtime","nicknames":[],"who_cares":["chrome","browsers","endpoints"],"confidence":0.8,"fix_status":"available","needs_auth":"no","worst_case":"Attacker runs code inside the browser sandbox after a visit","analyst_note":"","how_to_check":"- Open Chrome's version page (chrome://settings/help) and compare the version to `157.0.8103.38`\n- Check the Chrome version on managed machines with your device management tool; unknown for other tooling","plain_action":"Update Google Chrome to version 157.0.8103.38 or later: Chrome menu > Help > About Google Chrome.","needs_analyst":false,"not_affected_if":["already-updated","no-chrome"],"who_is_affected":"Any device running Google Chrome before 157.0.8103.38 is exposed when a user visits a malicious page, since the bug is triggered by a crafted HTML page in the browser's JavaScript engine. Browsers on managed fleets should be checked centrally. Systems that do not run Chrome are not affected by this entry.","user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.0007,"input_tokens":4103,"output_tokens":579,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-121068':14A,17A '-2026':13A,16A '157.0.8103.38':37B,75C 'allow':76C 'arbitrari':43B,82C 'attack':41B,79C 'browser':18B,47B 'bug':25B 'chrome':1A,19B,33B,72C 'chromium':54B,92C 'code':11A,44B,83C 'confus':4A,24B,67C 'craft':7A,51B,89C 'cve':12A,15A 'endpoint':20B 'engin':30B 'execut':81C 'exploit':64B 'fix':34B 'give':62B 'googl':32B,71C 'high':57B,95C 'html':52B,90C 'insid':45B,84C 'javascript':29B 'let':5A,38B 'page':9A,53B,91C 'prior':73C 'rate':55B 'remot':40B,78C 'run':10A,42B 'runtim':21B 'sandbox':48B,86C 'secur':93C 'sever':58B,94C 'sourc':61B 'status':65B 'type':3A,23B,66C 'v8':2A,28B,69C 'version':36B 'via':49B,87C 'web':8A","nicknames":[],"mitigations":[],"who_affected":"Any device running Google Chrome before 157.0.8103.38 is exposed when a user visits a malicious page, since the bug is triggered by a crafted HTML page in the browser's JavaScript engine. Browsers on managed fleets should be checked centrally. Systems that do not run Chrome are not affected by this entry.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"everyone","plain_action":"Update Google Chrome to version 157.0.8103.38 or later: Chrome menu > Help > About Google Chrome.","pkeys":[],"ptokens":[],"labels":["browsers","chrome","endpoints","high","runtime"],"campaign_type":null,"first_public_at":"2026-11-03T21:17:11+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-121068","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121068","severity":null,"published_at":"2026-11-03T21:17:11+00:00","modified_at":"2026-11-03T21:17:11+00:00","first_seen_at":"2026-11-03T21:19:11+00:00","fetched_at":"2026-11-03T21:19:11+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}