{"id":"CVE-2026-126867","kind":"vulnerability","aliases":["CVE-2026-126867"],"related":[],"title":"Chrome on Windows: browser flaw lets a crafted web page run code","description":"Use after free in Browser in Google Chrome on on Windows prior to 157.0.8103.78 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)","summary":"A use-after-free bug in Chrome's Browser component on Windows lets a remote attacker run arbitrary code outside the browser sandbox through a crafted HTML page. Chromium rates it High severity.","severity":"high","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browser","chrome","runtime","windows"],"not_affected_if":["chrome-updated","non-windows"],"how_to_check":"- Open Chrome, go to Settings > About Chrome, and read the version number\n- Check whether the installed version is below `157.0.8103.78`","fix":"- Google Chrome on Windows: update to `157.0.8103.78` or later","status":"open","published_at":"2026-11-11T23:17:15+00:00","first_seen_at":"2026-11-11T23:29:37+00:00","triaged_at":"2026-11-11T23:33:21+00:00","updated_at":"2026-11-11T23:33:21+00:00","category":"runtime","confidence":0.7,"triage":{"at":"2026-11-11T23:33:21Z","model":"claude-haiku-5-5","output":{"fix":"- Google Chrome on Windows: update to `157.0.8103.78` or later","reach":"internet","title":"Chrome on Windows: browser flaw lets a crafted web page run code","impact":"high","summary":"A use-after-free bug in Chrome's Browser component on Windows lets a remote attacker run arbitrary code outside the browser sandbox through a crafted HTML page. Chromium rates it High severity.","audience":"everyone","category":"runtime","nicknames":[],"who_cares":["chrome","windows","browser"],"confidence":0.7,"fix_status":"available","needs_auth":"no","worst_case":"Attacker runs arbitrary code outside the browser sandbox on the user's machine.","analyst_note":"","how_to_check":"- Open Chrome, go to Settings > About Chrome, and read the version number\n- Check whether the installed version is below `157.0.8103.78`","plain_action":"Update Google Chrome on your Windows computer to version 157.0.8103.78 or later.","product_name":"","needs_analyst":false,"not_affected_if":["chrome-updated","non-windows"],"who_is_affected":"Any Windows machine running Google Chrome before 157.0.8103.78 is exposed when a user opens a malicious web page. Managed fleets should confirm Chrome auto-update has applied the release.","user_interaction":"yes","product_ecosystem":"","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000706,"input_tokens":4534,"output_tokens":506,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-126867':15A,18A '-2026':14A,17A '157.0.8103.78':70C 'allow':71C 'arbitrari':41B,78C 'attack':39B,74C 'browser':4A,19B,32B,45B,61C 'bug':28B 'chrome':1A,20B,30B,64C 'chromium':52B,88C 'code':12A,42B,79C 'compon':33B 'craft':8A,49B,85C 'cve':13A,16A 'execut':77C 'flaw':5A 'free':27B,59C 'googl':63C 'high':55B,91C 'html':50B,86C 'let':6A,36B 'outsid':43B,80C 'page':10A,51B,87C 'potenti':76C 'prior':68C 'rate':53B 'remot':38B,73C 'run':11A,40B 'runtim':21B 'sandbox':46B,82C 'secur':89C 'sever':56B,90C 'use':25B,57C 'use-after-fre':24B 'via':83C 'web':9A 'window':3A,22B,35B,67C","nicknames":[],"mitigations":[],"who_affected":"Any Windows machine running Google Chrome before 157.0.8103.78 is exposed when a user opens a malicious web page. Managed fleets should confirm Chrome auto-update has applied the release.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"everyone","plain_action":"Update Google Chrome on your Windows computer to version 157.0.8103.78 or later.","pkeys":[],"ptokens":[],"labels":["browser","chrome","high","runtime","windows"],"campaign_type":null,"search_a":"'-126867':15A,18A '-2026':14A,17A 'browser':4A 'chrome':1A 'code':12A 'craft':8A 'cve':13A,16A 'flaw':5A 'let':6A 'page':10A 'run':11A 'web':9A 'window':3A","search_b":"'arbitrari':41B 'attack':39B 'browser':19B,32B,45B 'bug':28B 'chrome':20B,30B 'chromium':52B 'code':42B 'compon':33B 'craft':49B 'free':27B 'high':55B 'html':50B 'let':36B 'outsid':43B 'page':51B 'rate':53B 'remot':38B 'run':40B 'runtim':21B 'sandbox':46B 'sever':56B 'use':25B 'use-after-fre':24B 'window':22B,35B","search_c":"'157.0.8103.78':70C 'allow':71C 'arbitrari':78C 'attack':74C 'browser':61C 'chrome':64C 'chromium':88C 'code':79C 'craft':85C 'execut':77C 'free':59C 'googl':63C 'high':91C 'html':86C 'outsid':80C 'page':87C 'potenti':76C 'prior':68C 'remot':73C 'sandbox':82C 'secur':89C 'sever':90C 'use':57C 'via':83C 'window':67C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-11T23:17:15+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-126867","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126867","severity":null,"published_at":"2026-11-11T23:17:15+00:00","modified_at":"2026-11-11T23:17:15+00:00","first_seen_at":"2026-11-11T23:29:37+00:00","fetched_at":"2026-11-11T23:29:37+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"}