{"id":"CVE-2026-126849","kind":"vulnerability","aliases":["CVE-2026-126849"],"related":[],"title":"Chrome: V8 type confusion lets a crafted web page run code","description":"Type confusion in V8 in Google Chrome prior to 157.0.8103.78 allowed a remote attacker to potentially execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)","summary":"A type confusion bug in V8, the JavaScript engine in Google Chrome, lets a remote attacker run arbitrary code inside the browser sandbox when a victim opens a crafted HTML page. Chromium rates it High severity.","severity":"high","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browsers","chrome","runtime","v8"],"not_affected_if":["chrome-updated"],"how_to_check":"- Check the Chrome version in chrome://settings/help; versions before `157.0.8103.78` are affected.\n- Check managed browsers with the fleet tool that reports Chrome versions.","fix":"- Google Chrome: move to `157.0.8103.78` or later.","status":"open","published_at":"2026-11-11T23:17:12+00:00","first_seen_at":"2026-11-11T23:29:36+00:00","triaged_at":"2026-11-11T23:33:42+00:00","updated_at":"2026-11-11T23:33:42+00:00","category":"runtime","confidence":0.8,"triage":{"at":"2026-11-11T23:33:42Z","model":"claude-haiku-5-5","output":{"fix":"- Google Chrome: move to `157.0.8103.78` or later.","reach":"internet","title":"Chrome: V8 type confusion lets a crafted web page run code","impact":"high","summary":"A type confusion bug in V8, the JavaScript engine in Google Chrome, lets a remote attacker run arbitrary code inside the browser sandbox when a victim opens a crafted HTML page. Chromium rates it High severity.","audience":"everyone","category":"runtime","nicknames":[],"who_cares":["chrome","v8","browsers"],"confidence":0.8,"fix_status":"available","needs_auth":"no","worst_case":"Attacker runs code inside the browser sandbox after a page visit","analyst_note":"","how_to_check":"- Check the Chrome version in chrome://settings/help; versions before `157.0.8103.78` are affected.\n- Check managed browsers with the fleet tool that reports Chrome versions.","plain_action":"Update Google Chrome to version 157.0.8103.78 or later: Chrome menu > Help > About Google Chrome.","product_name":"","needs_analyst":false,"not_affected_if":["chrome-updated"],"who_is_affected":"Anyone running Google Chrome before 157.0.8103.78 who visits untrusted web pages is exposed, since the bug is triggered by a crafted HTML page. Chromium-based browsers that embed the same V8 engine may also be affected, depending on their own release timing. Teams that manage browsers on employee machines should check versions across the fleet.","user_interaction":"yes","product_ecosystem":"","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000732,"input_tokens":4531,"output_tokens":558,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-126849':14A,17A '-2026':13A,16A '157.0.8103.78':67C 'allow':68C 'arbitrari':39B,75C 'attack':37B,71C 'browser':18B,43B 'bug':25B 'chrome':1A,19B,33B,64C 'chromium':53B,85C 'code':11A,40B,76C 'confus':4A,24B,59C 'craft':7A,50B,82C 'cve':12A,15A 'engin':30B 'execut':74C 'googl':32B,63C 'high':56B,88C 'html':51B,83C 'insid':41B,77C 'javascript':29B 'let':5A,34B 'open':48B 'page':9A,52B,84C 'potenti':73C 'prior':65C 'rate':54B 'remot':36B,70C 'run':10A,38B 'runtim':20B 'sandbox':44B,79C 'secur':86C 'sever':57B,87C 'type':3A,23B,58C 'v8':2A,21B,27B,61C 'via':80C 'victim':47B 'web':8A","nicknames":[],"mitigations":[],"who_affected":"Anyone running Google Chrome before 157.0.8103.78 who visits untrusted web pages is exposed, since the bug is triggered by a crafted HTML page. Chromium-based browsers that embed the same V8 engine may also be affected, depending on their own release timing. Teams that manage browsers on employee machines should check versions across the fleet.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"everyone","plain_action":"Update Google Chrome to version 157.0.8103.78 or later: Chrome menu > Help > About Google Chrome.","pkeys":[],"ptokens":[],"labels":["browsers","chrome","high","runtime","v8"],"campaign_type":null,"search_a":"'-126849':14A,17A '-2026':13A,16A 'chrome':1A 'code':11A 'confus':4A 'craft':7A 'cve':12A,15A 'let':5A 'page':9A 'run':10A 'type':3A 'v8':2A 'web':8A","search_b":"'arbitrari':39B 'attack':37B 'browser':18B,43B 'bug':25B 'chrome':19B,33B 'chromium':53B 'code':40B 'confus':24B 'craft':50B 'engin':30B 'googl':32B 'high':56B 'html':51B 'insid':41B 'javascript':29B 'let':34B 'open':48B 'page':52B 'rate':54B 'remot':36B 'run':38B 'runtim':20B 'sandbox':44B 'sever':57B 'type':23B 'v8':21B,27B 'victim':47B","search_c":"'157.0.8103.78':67C 'allow':68C 'arbitrari':75C 'attack':71C 'chrome':64C 'chromium':85C 'code':76C 'confus':59C 'craft':82C 'execut':74C 'googl':63C 'high':88C 'html':83C 'insid':77C 'page':84C 'potenti':73C 'prior':65C 'remot':70C 'sandbox':79C 'secur':86C 'sever':87C 'type':58C 'v8':61C 'via':80C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-11T23:17:12+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-126849","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126849","severity":null,"published_at":"2026-11-11T23:17:12+00:00","modified_at":"2026-11-11T23:17:12+00:00","first_seen_at":"2026-11-11T23:29:36+00:00","fetched_at":"2026-11-11T23:29:36+00:00","note":null}],"documents":[],"disclosures":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}