{"id":"CVE-2026-126864","kind":"vulnerability","aliases":["CVE-2026-126864"],"related":[],"title":"Chrome: V8 use-after-free lets a crafted web page run code","description":"Use after free in V8 in Google Chrome prior to 157.0.8103.78 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)","summary":"A use-after-free bug in the V8 JavaScript engine of Google Chrome lets a remote attacker run arbitrary code inside the browser sandbox when a victim opens a crafted HTML page. The sources rate it High under Chromium's security severity scale.","severity":"high","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browsers","chrome","linux","macos","runtime","v8","windows"],"not_affected_if":["chrome-at-or-above-157.0.8103.78"],"how_to_check":"- Open Chrome's version page (chrome://version) and compare the version with `157.0.8103.78`.\n- Check the installed version on managed machines with your device management tool.","fix":"- Google Chrome: move to `157.0.8103.78` or later.","status":"open","published_at":"2026-11-11T23:17:14+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":"runtime","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":"Chrome: V8 use-after-free lets a crafted web page run code","impact":"high","summary":"A use-after-free bug in the V8 JavaScript engine of Google Chrome lets a remote attacker run arbitrary code inside the browser sandbox when a victim opens a crafted HTML page. The sources rate it High under Chromium's security severity scale.","audience":"everyone","category":"runtime","nicknames":[],"who_cares":["chrome","v8","browsers","windows","macos","linux"],"confidence":0.8,"fix_status":"available","needs_auth":"no","worst_case":"Attacker runs code inside the browser sandbox after a visit","analyst_note":"Other Chromium-based browsers may need separate fix checks; sources do not say.\n","how_to_check":"- Open Chrome's version page (chrome://version) and compare the version with `157.0.8103.78`.\n- Check the installed version on managed machines 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-at-or-above-157.0.8103.78"],"who_is_affected":"Anyone running Google Chrome before 157.0.8103.78 is exposed when they open a malicious web page. Chromium-based browsers that pull in the same V8 code may also be affected, and the sources do not say which ones. Systems that never run Chrome are not affected.","user_interaction":"yes","product_ecosystem":"","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000744,"input_tokens":4529,"output_tokens":582,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-126864':16A,19A '-2026':15A,18A '157.0.8103.78':81C 'allow':82C 'arbitrari':46B,88C 'attack':44B,85C 'browser':20B,50B 'bug':32B 'chrome':1A,21B,40B,78C 'chromium':66B,98C 'code':13A,47B,89C 'craft':9A,57B,95C 'cve':14A,17A 'engin':37B 'execut':87C 'free':6A,31B,73C 'googl':39B,77C 'high':64B,101C 'html':58B,96C 'insid':48B,90C 'javascript':36B 'let':7A,41B 'linux':22B 'maco':23B 'open':55B 'page':11A,59B,97C 'prior':79C 'rate':62B 'remot':43B,84C 'run':12A,45B 'runtim':24B 'sandbox':51B,92C 'scale':70B 'secur':68B,99C 'sever':69B,100C 'sourc':61B 'use':4A,29B,71C 'use-after-fre':3A,28B 'v8':2A,25B,35B,75C 'via':93C 'victim':54B 'web':10A 'window':26B","nicknames":[],"mitigations":[],"who_affected":"Anyone running Google Chrome before 157.0.8103.78 is exposed when they open a malicious web page. Chromium-based browsers that pull in the same V8 code may also be affected, and the sources do not say which ones. Systems that never run Chrome are not affected.","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","linux","macos","runtime","v8","windows"],"campaign_type":null,"search_a":"'-126864':16A,19A '-2026':15A,18A 'chrome':1A 'code':13A 'craft':9A 'cve':14A,17A 'free':6A 'let':7A 'page':11A 'run':12A 'use':4A 'use-after-fre':3A 'v8':2A 'web':10A","search_b":"'arbitrari':46B 'attack':44B 'browser':20B,50B 'bug':32B 'chrome':21B,40B 'chromium':66B 'code':47B 'craft':57B 'engin':37B 'free':31B 'googl':39B 'high':64B 'html':58B 'insid':48B 'javascript':36B 'let':41B 'linux':22B 'maco':23B 'open':55B 'page':59B 'rate':62B 'remot':43B 'run':45B 'runtim':24B 'sandbox':51B 'scale':70B 'secur':68B 'sever':69B 'sourc':61B 'use':29B 'use-after-fre':28B 'v8':25B,35B 'victim':54B 'window':26B","search_c":"'157.0.8103.78':81C 'allow':82C 'arbitrari':88C 'attack':85C 'chrome':78C 'chromium':98C 'code':89C 'craft':95C 'execut':87C 'free':73C 'googl':77C 'high':101C 'html':96C 'insid':90C 'page':97C 'prior':79C 'remot':84C 'sandbox':92C 'secur':99C 'sever':100C 'use':71C 'v8':75C 'via':93C","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-2026-126864","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126864","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"}