{"id":"CVE-2026-126863","kind":"vulnerability","aliases":["CVE-2026-126863"],"related":[],"title":"Google Chrome: use-after-free in HTML lets a crafted page run code","description":"Use after free in HTML 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 use-after-free bug in the HTML handling of Google Chrome before 157.0.8103.78 lets a remote attacker run arbitrary code inside the browser sandbox. The attack works through a specially crafted web page, and Chromium rates it High severity.","severity":"high","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browser","chrome","desktop","end-users","other"],"not_affected_if":["chrome-up-to-date"],"how_to_check":"- Open Chrome and check the version under Settings > About Chrome; versions below `157.0.8103.78` are affected.","fix":"- Google Chrome: move to `157.0.8103.78` or later.","status":"open","published_at":"2026-11-11T23:17:14+00:00","first_seen_at":"2026-11-11T23:29:37+00:00","triaged_at":"2026-11-11T23:33:25+00:00","updated_at":"2026-11-11T23:33:25+00:00","category":"other","confidence":0.8,"triage":{"at":"2026-11-11T23:33:25Z","model":"claude-haiku-5-5","output":{"fix":"- Google Chrome: move to `157.0.8103.78` or later.","reach":"internet","title":"Google Chrome: use-after-free in HTML lets a crafted page run code","impact":"high","summary":"A use-after-free bug in the HTML handling of Google Chrome before 157.0.8103.78 lets a remote attacker run arbitrary code inside the browser sandbox. The attack works through a specially crafted web page, and Chromium rates it High severity.","audience":"everyone","category":"other","nicknames":[],"who_cares":["chrome","browser","desktop","end-users"],"confidence":0.8,"fix_status":"available","needs_auth":"no","worst_case":"Attacker runs code inside the browser sandbox via a crafted page","analyst_note":"","how_to_check":"- Open Chrome and check the version under Settings > About Chrome; versions below `157.0.8103.78` are affected.","plain_action":"Update Google Chrome to version 157.0.8103.78 or later, then restart the browser.","product_name":"","needs_analyst":false,"not_affected_if":["chrome-up-to-date"],"who_is_affected":"Anyone running Google Chrome before 157.0.8103.78 who visits a malicious or compromised web page. Systems where Chrome is not installed, or already on the fixed version, are not exposed.","user_interaction":"yes","product_ecosystem":"","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000698,"input_tokens":4529,"output_tokens":490,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-126863':17A,20A '-2026':16A,19A '157.0.8103.78':41B,78C 'allow':79C 'arbitrari':47B,86C 'attack':45B,54B,82C 'browser':21B,51B 'bug':32B 'chrome':2A,22B,39B,75C 'chromium':63B,96C 'code':14A,48B,87C 'craft':11A,59B,93C 'cve':15A,18A 'desktop':23B 'end':25B 'end-us':24B 'execut':85C 'free':6A,31B,70C 'googl':1A,38B,74C 'handl':36B 'high':66B,99C 'html':8A,35B,72C,94C 'insid':49B,88C 'let':9A,42B 'page':12A,61B,95C 'potenti':84C 'prior':76C 'rate':64B 'remot':44B,81C 'run':13A,46B 'sandbox':52B,90C 'secur':97C 'sever':67B,98C 'special':58B 'use':4A,29B,68C 'use-after-fre':3A,28B 'user':26B 'via':91C 'web':60B 'work':55B","nicknames":[],"mitigations":[],"who_affected":"Anyone running Google Chrome before 157.0.8103.78 who visits a malicious or compromised web page. Systems where Chrome is not installed, or already on the fixed version, are not exposed.","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, then restart the browser.","pkeys":[],"ptokens":[],"labels":["browser","chrome","desktop","endusers","high","other"],"campaign_type":null,"search_a":"'-126863':17A,20A '-2026':16A,19A 'chrome':2A 'code':14A 'craft':11A 'cve':15A,18A 'free':6A 'googl':1A 'html':8A 'let':9A 'page':12A 'run':13A 'use':4A 'use-after-fre':3A","search_b":"'157.0.8103.78':41B 'arbitrari':47B 'attack':45B,54B 'browser':21B,51B 'bug':32B 'chrome':22B,39B 'chromium':63B 'code':48B 'craft':59B 'desktop':23B 'end':25B 'end-us':24B 'free':31B 'googl':38B 'handl':36B 'high':66B 'html':35B 'insid':49B 'let':42B 'page':61B 'rate':64B 'remot':44B 'run':46B 'sandbox':52B 'sever':67B 'special':58B 'use':29B 'use-after-fre':28B 'user':26B 'web':60B 'work':55B","search_c":"'157.0.8103.78':78C 'allow':79C 'arbitrari':86C 'attack':82C 'chrome':75C 'chromium':96C 'code':87C 'craft':93C 'execut':85C 'free':70C 'googl':74C 'high':99C 'html':72C,94C 'insid':88C 'page':95C 'potenti':84C 'prior':76C 'remot':81C 'sandbox':90C 'secur':97C 'sever':98C 'use':68C 'via':91C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-11T23:17:14+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-126863","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126863","severity":null,"published_at":"2026-11-11T23:17:14+00:00","modified_at":"2026-11-11T23:17:14+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"}