{"id":"CVE-2026-118359","kind":"vulnerability","aliases":["CVE-2026-118359"],"related":[],"title":"Chrome V8: memory corruption lets a crafted web page run code","description":"Memory corruption in V8 in Google Chrome prior to 156.0.8078.73 allowed a remote attacker to potentially execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)","summary":"A memory corruption bug in the V8 JavaScript engine in Google Chrome before 156.0.8078.73 can be triggered by a crafted HTML page. A remote attacker could potentially execute arbitrary code inside the browser sandbox.","severity":"high","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browsers","chrome","endpoints","runtime"],"not_affected_if":["chrome-updated"],"how_to_check":"- Open Chrome, go to `chrome://settings/help` and read the version shown\n- Check the installed version is `156.0.8078.73` or later on each managed machine","fix":"- Update Google Chrome to `156.0.8078.73` or later, then restart the browser","status":"open","published_at":"2026-10-27T23:17:05+00:00","first_seen_at":"2026-10-27T23:29:44+00:00","triaged_at":"2026-10-27T23:31:22+00:00","updated_at":"2026-10-27T23:31:22+00:00","category":"runtime","confidence":0.7,"triage":{"at":"2026-10-27T23:31:22Z","model":"claude-haiku-5-5","output":{"fix":"- Update Google Chrome to `156.0.8078.73` or later, then restart the browser","reach":"internet","title":"Chrome V8: memory corruption lets a crafted web page run code","impact":"high","summary":"A memory corruption bug in the V8 JavaScript engine in Google Chrome before 156.0.8078.73 can be triggered by a crafted HTML page. A remote attacker could potentially execute arbitrary code inside the browser sandbox.","category":"runtime","nicknames":[],"who_cares":["chrome","browsers","endpoints"],"confidence":0.7,"needs_auth":"no","worst_case":"Attacker runs code inside the browser sandbox after a visit","analyst_note":"","how_to_check":"- Open Chrome, go to `chrome://settings/help` and read the version shown\n- Check the installed version is `156.0.8078.73` or later on each managed machine","needs_analyst":false,"not_affected_if":["chrome-updated"],"who_is_affected":"Any device running Google Chrome before `156.0.8078.73` is exposed when a user visits a malicious or compromised web page. Teams that manage browsers centrally should check fleet versions; the sources do not say whether Chromium-based browsers other than Chrome are affected.","user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000565,"input_tokens":3297,"output_tokens":471,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-118359':14A,17A '-2026':13A,16A '156.0.8078.73':35B,65C 'allow':66C 'arbitrari':50B,73C 'attack':46B,69C 'browser':18B,54B 'bug':25B 'chrome':1A,19B,33B,62C 'chromium':83C 'code':11A,51B,74C 'corrupt':4A,24B,57C 'could':47B 'craft':7A,41B,80C 'cve':12A,15A 'endpoint':20B 'engin':30B 'execut':49B,72C 'googl':32B,61C 'high':86C 'html':42B,81C 'insid':52B,75C 'javascript':29B 'let':5A 'memori':3A,23B,56C 'page':9A,43B,82C 'potenti':48B,71C 'prior':63C 'remot':45B,68C 'run':10A 'runtim':21B 'sandbox':55B,77C 'secur':84C 'sever':85C 'trigger':38B 'v8':2A,28B,59C 'via':78C 'web':8A","nicknames":[],"mitigations":[],"who_affected":"Any device running Google Chrome before `156.0.8078.73` is exposed when a user visits a malicious or compromised web page. Teams that manage browsers centrally should check fleet versions; the sources do not say whether Chromium-based browsers other than Chrome are affected.","tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-27T23:17:05+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-118359","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-118359","severity":null,"published_at":"2026-10-27T23:17:05+00:00","modified_at":"2026-10-27T23:17:05+00:00","first_seen_at":"2026-10-27T23:29:44+00:00","fetched_at":"2026-10-27T23:29:44+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}