{"id":"CVE-2026-126881","kind":"vulnerability","aliases":["CVE-2026-126881"],"related":[],"title":"Chrome: improper initialization in Media lets a crafted page run code","description":"Improper initialization in Media in Google Chrome 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 flaw in the Media component of Google Chrome before 157.0.8103.78 lets a remote attacker run arbitrary code outside the browser sandbox. The attack is delivered through a crafted HTML page that the victim opens.","severity":"high","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browser","chrome","desktop","mobile","runtime"],"not_affected_if":["chrome-updated"],"how_to_check":"- Open Chrome and go to chrome://settings/help to see the installed version, which should be `157.0.8103.78` or later.\n- Check the version on managed machines with your device management tool.","fix":"- Google Chrome: move to `157.0.8103.78` or later.","status":"open","published_at":"2026-11-11T23:17:17+00:00","first_seen_at":"2026-11-11T23:29:38+00:00","triaged_at":"2026-11-11T23:32:09+00:00","updated_at":"2026-11-11T23:32:09+00:00","category":"runtime","confidence":0.8,"triage":{"at":"2026-11-11T23:32:09Z","model":"claude-haiku-5-5","output":{"fix":"- Google Chrome: move to `157.0.8103.78` or later.","reach":"internet","title":"Chrome: improper initialization in Media lets a crafted page run code","impact":"high","summary":"A flaw in the Media component of Google Chrome before 157.0.8103.78 lets a remote attacker run arbitrary code outside the browser sandbox. The attack is delivered through a crafted HTML page that the victim opens.","audience":"everyone","category":"runtime","nicknames":[],"who_cares":["chrome","browser","desktop","mobile"],"confidence":0.8,"fix_status":"available","needs_auth":"no","worst_case":"Attacker runs code outside the browser sandbox on the victim's machine.","analyst_note":"","how_to_check":"- Open Chrome and go to chrome://settings/help to see the installed version, which should be `157.0.8103.78` or later.\n- Check the version on managed machines with your device management tool.","plain_action":"Update Google Chrome to version 157.0.8103.78 or later: open the Chrome menu, go to Help, then About Google Chrome.","product_name":"","needs_analyst":false,"not_affected_if":["chrome-updated"],"who_is_affected":"Any device running Google Chrome older than 157.0.8103.78 is exposed when the user opens a malicious web page. Managed fleets should check the installed version centrally. Users on other browsers built on Chromium should check their own vendor's update status.","user_interaction":"yes","product_ecosystem":"","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000726,"input_tokens":4529,"output_tokens":546,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-126881':14A,17A '-2026':13A,16A '157.0.8103.78':33B,67C 'allow':68C 'arbitrari':39B,75C 'attack':37B,46B,71C 'browser':18B,43B 'chrome':1A,19B,31B,64C 'chromium':85C 'code':11A,40B,76C 'compon':28B 'craft':8A,51B,82C 'cve':12A,15A 'deliv':48B 'desktop':20B 'execut':74C 'flaw':24B 'googl':30B,63C 'high':88C 'html':52B,83C 'improp':2A,58C 'initi':3A,59C 'let':6A,34B 'media':5A,27B,61C 'mobil':21B 'open':57B 'outsid':41B,77C 'page':9A,53B,84C 'potenti':73C 'prior':65C 'remot':36B,70C 'run':10A,38B 'runtim':22B 'sandbox':44B,79C 'secur':86C 'sever':87C 'via':80C 'victim':56B","nicknames":[],"mitigations":[],"who_affected":"Any device running Google Chrome older than 157.0.8103.78 is exposed when the user opens a malicious web page. Managed fleets should check the installed version centrally. Users on other browsers built on Chromium should check their own vendor's update status.","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: open the Chrome menu, go to Help, then About Google Chrome.","pkeys":[],"ptokens":[],"labels":["browser","chrome","desktop","high","mobile","runtime"],"campaign_type":null,"search_a":"'-126881':14A,17A '-2026':13A,16A 'chrome':1A 'code':11A 'craft':8A 'cve':12A,15A 'improp':2A 'initi':3A 'let':6A 'media':5A 'page':9A 'run':10A","search_b":"'157.0.8103.78':33B 'arbitrari':39B 'attack':37B,46B 'browser':18B,43B 'chrome':19B,31B 'code':40B 'compon':28B 'craft':51B 'deliv':48B 'desktop':20B 'flaw':24B 'googl':30B 'html':52B 'let':34B 'media':27B 'mobil':21B 'open':57B 'outsid':41B 'page':53B 'remot':36B 'run':38B 'runtim':22B 'sandbox':44B 'victim':56B","search_c":"'157.0.8103.78':67C 'allow':68C 'arbitrari':75C 'attack':71C 'chrome':64C 'chromium':85C 'code':76C 'craft':82C 'execut':74C 'googl':63C 'high':88C 'html':83C 'improp':58C 'initi':59C 'media':61C 'outsid':77C 'page':84C 'potenti':73C 'prior':65C 'remot':70C 'sandbox':79C 'secur':86C 'sever':87C 'via':80C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-11T23:17:17+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-126881","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126881","severity":null,"published_at":"2026-11-11T23:17:17+00:00","modified_at":"2026-11-11T23:17:17+00:00","first_seen_at":"2026-11-11T23:29:38+00:00","fetched_at":"2026-11-11T23:29:38+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"}