{"id":"CVE-2026-126854","kind":"vulnerability","aliases":["CVE-2026-126854"],"related":[],"title":"Chrome: incorrect authorization in Layout leaks cross-origin data via HTML","description":"Incorrect authorization in Layout in Google Chrome prior to 157.0.8103.78 allowed a remote attacker to obtain cross-origin data via a crafted HTML page. (Chromium security severity: High)","summary":"Google Chrome before 157.0.8103.78 has an authorization flaw in its Layout component. A crafted HTML page can make a remote attacker read data from other websites.","severity":"high","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browser","chrome","desktop","linux","macos","runtime","windows"],"not_affected_if":["chrome-updated"],"how_to_check":"- Open Chrome, go to `chrome://settings/help` and check the version; it should be `157.0.8103.78` or later.\n- On managed machines, check the installed Chrome version with your device management tool.","fix":"- Google Chrome: update to `157.0.8103.78` or later.","status":"open","published_at":"2026-11-11T23:17:13+00:00","first_seen_at":"2026-11-11T23:29:36+00:00","triaged_at":"2026-11-11T23:33:36+00:00","updated_at":"2026-11-11T23:33:36+00:00","category":"runtime","confidence":0.7,"triage":{"at":"2026-11-11T23:33:36Z","model":"claude-haiku-5-5","output":{"fix":"- Google Chrome: update to `157.0.8103.78` or later.","reach":"internet","title":"Chrome: incorrect authorization in Layout leaks cross-origin data via HTML","impact":"medium","summary":"Google Chrome before 157.0.8103.78 has an authorization flaw in its Layout component. A crafted HTML page can make a remote attacker read data from other websites.","audience":"everyone","category":"runtime","nicknames":[],"who_cares":["chrome","browser","desktop","windows","macos","linux"],"confidence":0.7,"fix_status":"available","needs_auth":"no","worst_case":"Attacker reads cross-origin data from pages the victim has open","analyst_note":"","how_to_check":"- Open Chrome, go to `chrome://settings/help` and check the version; it should be `157.0.8103.78` or later.\n- On managed machines, check the installed Chrome version with your device management tool.","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 on desktop is exposed when they visit a malicious web page. Chromium-based browsers that share the same Layout code may also be affected, depending on their own update status. unknown for other Chromium forks.","user_interaction":"yes","product_ecosystem":"","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000724,"input_tokens":4526,"output_tokens":542,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-126854':15A,18A '-2026':14A,17A '157.0.8103.78':29B,61C 'allow':62C 'attack':46B,65C 'author':3A,32B,53C 'browser':19B 'chrome':1A,20B,27B,58C 'chromium':77C 'compon':37B 'craft':39B,74C 'cross':8A,69C 'cross-origin':7A,68C 'cve':13A,16A 'data':10A,48B,71C 'desktop':21B 'flaw':33B 'googl':26B,57C 'high':80C 'html':12A,40B,75C 'incorrect':2A,52C 'layout':5A,36B,55C 'leak':6A 'linux':22B 'maco':23B 'make':43B 'obtain':67C 'origin':9A,70C 'page':41B,76C 'prior':59C 'read':47B 'remot':45B,64C 'runtim':24B 'secur':78C 'sever':79C 'via':11A,72C 'websit':51B 'window':25B","nicknames":[],"mitigations":[],"who_affected":"Anyone running Google Chrome before 157.0.8103.78 on desktop is exposed when they visit a malicious web page. Chromium-based browsers that share the same Layout code may also be affected, depending on their own update status. unknown for other Chromium forks.","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":["browser","chrome","desktop","high","linux","macos","runtime","windows"],"campaign_type":null,"search_a":"'-126854':15A,18A '-2026':14A,17A 'author':3A 'chrome':1A 'cross':8A 'cross-origin':7A 'cve':13A,16A 'data':10A 'html':12A 'incorrect':2A 'layout':5A 'leak':6A 'origin':9A 'via':11A","search_b":"'157.0.8103.78':29B 'attack':46B 'author':32B 'browser':19B 'chrome':20B,27B 'compon':37B 'craft':39B 'data':48B 'desktop':21B 'flaw':33B 'googl':26B 'html':40B 'layout':36B 'linux':22B 'maco':23B 'make':43B 'page':41B 'read':47B 'remot':45B 'runtim':24B 'websit':51B 'window':25B","search_c":"'157.0.8103.78':61C 'allow':62C 'attack':65C 'author':53C 'chrome':58C 'chromium':77C 'craft':74C 'cross':69C 'cross-origin':68C 'data':71C 'googl':57C 'high':80C 'html':75C 'incorrect':52C 'layout':55C 'obtain':67C 'origin':70C 'page':76C 'prior':59C 'remot':64C 'secur':78C 'sever':79C 'via':72C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-11T23:17:13+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-126854","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126854","severity":null,"published_at":"2026-11-11T23:17:13+00:00","modified_at":"2026-11-11T23:17:13+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"}