{"id":"CVE-2026-113020","kind":"vulnerability","aliases":["CVE-2026-113020"],"related":[],"title":"Chrome: crafted web page can run code outside the sandbox","description":"Improper input validation in Date in Google Chrome prior to 156.0.8078.47 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 how Chrome's Date handling validates input lets a remote attacker run arbitrary code outside the browser sandbox. The attack works through a crafted HTML page that a user opens.","severity":"critical","cvss":9.6,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"google chrome","fixed":["156.0.8078.47"],"affected":"< 156.0.8078.47","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["browser","chrome","desktop","runtime"],"not_affected_if":["chrome-already-updated"],"how_to_check":"Run chrome://version in the browser and compare the version to 156.0.8078.47; unknown for managed fleets.","fix":"Update Google Chrome to 156.0.8078.47 or later.","status":"open","published_at":"2026-10-20T22:18:52+00:00","first_seen_at":"2026-10-23T21:57:23+00:00","triaged_at":"2026-10-23T22:38:10+00:00","updated_at":"2026-10-23T22:38:10+00:00","category":"runtime","confidence":0.8,"triage":{"at":"2026-10-23T22:38:10Z","model":"claude-haiku-5-5","output":{"fix":"Update Google Chrome to 156.0.8078.47 or later.","reach":"internet","title":"Chrome: crafted web page can run code outside the sandbox","impact":"high","summary":"A flaw in how Chrome's Date handling validates input lets a remote attacker run arbitrary code outside the browser sandbox. The attack works through a crafted HTML page that a user opens.","category":"runtime","who_cares":["chrome","desktop","browser"],"confidence":0.8,"needs_auth":"no","worst_case":"Attacker runs code on the user's machine outside the browser sandbox.","analyst_note":"","how_to_check":"Run chrome://version in the browser and compare the version to 156.0.8078.47; unknown for managed fleets.","needs_analyst":false,"not_affected_if":["chrome-already-updated"],"user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"critical"},"cost_usd":0.000457,"input_tokens":2940,"output_tokens":325,"severity_before":"critical"},"analyst_status":null,"analyst_note":null,"search":"'-113020':13A,16A '-2026':12A,15A '156.0.8078.47':66C 'allow':67C 'arbitrari':38B,74C 'attack':36B,45B,70C 'browser':19B,42B 'chrome':1A,18A,20B,27B,63C 'chromium':84C 'code':7A,39B,75C 'craft':2A,49B,81C 'cve':11A,14A 'date':29B,60C 'desktop':21B 'execut':73C 'flaw':24B 'googl':62C 'google':17A 'handl':30B 'high':87C 'html':50B,82C 'improp':56C 'input':32B,57C 'let':33B 'open':55B 'outsid':8A,40B,76C 'page':4A,51B,83C 'potenti':72C 'prior':64C 'remot':35B,69C 'run':6A,37B 'runtim':22B 'sandbox':10A,43B,78C 'secur':85C 'sever':86C 'user':54B 'valid':31B,58C 'via':79C 'web':3A 'work':46B","nicknames":[],"mitigations":[],"who_affected":null,"tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:18:52+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","cvss_by":"134c704f-9b21-4f2e-91b3-4a467353bcc0","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-113020","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-113020","severity":null,"published_at":"2026-10-20T22:18:52+00:00","modified_at":"2026-10-21T17:10:48+00:00","first_seen_at":"2026-10-23T21:57:23+00:00","fetched_at":"2026-10-23T22:28:59+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"}