{"id":"CVE-2026-113030","kind":"vulnerability","aliases":["CVE-2026-113030"],"related":[],"title":"Chrome V8: access control flaw lets a crafted page bypass origin policy","description":"Improper access control in V8 in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to potentially bypass web origin policy via a crafted HTML page. (Chromium security severity: Medium)","summary":"A flaw in V8, the JavaScript engine in Google Chrome before 156.0.8078.47, lets a remote attacker bypass web origin policy using a crafted HTML page. The attacker can read or act on data from other sites the victim has open.","severity":"high","cvss":8.8,"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":["browsers","chrome","desktop","runtime"],"not_affected_if":["already-on-156.0.8078.47-or-later"],"how_to_check":"In Chrome, open chrome://settings/help and read the version number; anything below 156.0.8078.47 is affected.","fix":"Update Google Chrome to 156.0.8078.47 or later.","status":"open","published_at":"2026-10-20T22:18:53+00:00","first_seen_at":"2026-10-23T21:57:23+00:00","triaged_at":"2026-10-23T22:38:06+00:00","updated_at":"2026-10-23T22:38:06+00:00","category":"runtime","confidence":0.8,"triage":{"at":"2026-10-23T22:38:06Z","model":"claude-haiku-5-5","output":{"fix":"Update Google Chrome to 156.0.8078.47 or later.","reach":"internet","title":"Chrome V8: access control flaw lets a crafted page bypass origin policy","impact":"medium","summary":"A flaw in V8, the JavaScript engine in Google Chrome before 156.0.8078.47, lets a remote attacker bypass web origin policy using a crafted HTML page. The attacker can read or act on data from other sites the victim has open.","category":"runtime","who_cares":["chrome","desktop","browsers"],"confidence":0.8,"needs_auth":"no","worst_case":"Attacker reads cross-site data from pages the victim visits","analyst_note":"","how_to_check":"In Chrome, open chrome://settings/help and read the version number; anything below 156.0.8078.47 is affected.","needs_analyst":false,"not_affected_if":["already-on-156.0.8078.47-or-later"],"user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"unknown"},"cost_usd":0.000472,"input_tokens":2935,"output_tokens":357,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-113030':15A,18A '-2026':14A,17A '156.0.8078.47':36B,75C 'access':3A,66C 'act':55B 'allow':76C 'attack':40B,51B,79C 'browser':21B 'bypass':10A,41B,82C 'chrome':1A,20A,22B,34B,72C 'chromium':91C 'control':4A,67C 'craft':8A,47B,88C 'cve':13A,16A 'data':57B 'desktop':23B 'engin':31B 'flaw':5A,26B 'googl':33B,71C 'google':19A 'html':48B,89C 'improp':65C 'javascript':30B 'let':6A,37B 'medium':94C 'open':64B 'origin':11A,43B,84C 'page':9A,49B,90C 'polici':12A,44B,85C 'potenti':81C 'prior':73C 'read':53B 'remot':39B,78C 'runtim':24B 'secur':92C 'sever':93C 'site':60B 'use':45B 'v8':2A,28B,69C 'via':86C 'victim':62B 'web':42B,83C","nicknames":[],"mitigations":[],"who_affected":null,"tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:18:53+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cvss_by":"nvd@nist.gov","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-113030","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-113030","severity":null,"published_at":"2026-10-20T22:18:53+00:00","modified_at":"2026-10-22T15:38:52+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"}