{"id":"CVE-2026-113270","kind":"vulnerability","aliases":["CVE-2026-113270"],"related":[],"title":"Chrome: use-after-free lets a crafted web page run code outside sandbox","description":"Use after free in Internals in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)","summary":"A use-after-free bug in Chrome's Internals component lets a remote attacker run arbitrary code outside the browser sandbox via a crafted HTML page. Visiting a malicious page is enough to give the attacker control of the user's machine within the browser's process boundary escape.","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":["browsers","chrome","desktop","runtime"],"not_affected_if":["already-on-156.0.8078.47-or-later"],"how_to_check":"Run chrome://version and compare the version to 156.0.8078.47; anything lower is affected.","fix":"Update Google Chrome to 156.0.8078.47 or later.","status":"open","published_at":"2026-10-20T22:19:20+00:00","first_seen_at":"2026-10-23T21:57:24+00:00","triaged_at":"2026-10-23T22:35:34+00:00","updated_at":"2026-10-23T22:35:34+00:00","category":"runtime","confidence":0.85,"triage":{"at":"2026-10-23T22:35:34Z","model":"claude-haiku-5-5","output":{"fix":"Update Google Chrome to 156.0.8078.47 or later.","reach":"internet","title":"Chrome: use-after-free lets a crafted web page run code outside sandbox","impact":"high","summary":"A use-after-free bug in Chrome's Internals component lets a remote attacker run arbitrary code outside the browser sandbox via a crafted HTML page. Visiting a malicious page is enough to give the attacker control of the user's machine within the browser's process boundary escape.","category":"runtime","who_cares":["chrome","browsers","desktop"],"confidence":0.85,"needs_auth":"no","worst_case":"Attacker runs arbitrary code outside the Chrome sandbox on the user's machine.","analyst_note":"","how_to_check":"Run chrome://version and compare the version to 156.0.8078.47; anything lower 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":"critical"},"cost_usd":0.000478,"input_tokens":2942,"output_tokens":368,"severity_before":"critical"},"analyst_status":null,"analyst_note":null,"search":"'-113270':17A,20A '-2026':16A,19A '156.0.8078.47':87C 'allow':88C 'arbitrari':43B,94C 'attack':41B,63B,91C 'boundari':75B 'browser':23B,47B,72B 'bug':32B 'chrome':1A,22A,24B,34B,84C 'chromium':104C 'code':12A,44B,95C 'compon':37B 'control':64B 'craft':8A,51B,101C 'cve':15A,18A 'desktop':25B 'enough':59B 'escap':76B 'execut':93C 'free':5A,31B,79C 'give':61B 'googl':83C 'google':21A 'html':52B,102C 'intern':36B,81C 'let':6A,38B 'machin':69B 'malici':56B 'medium':107C 'outsid':13A,45B,96C 'page':10A,53B,57B,103C 'prior':85C 'process':74B 'remot':40B,90C 'run':11A,42B 'runtim':26B 'sandbox':14A,48B,98C 'secur':105C 'sever':106C 'use':3A,29B,77C 'use-after-fre':2A,28B 'user':67B 'via':49B,99C 'visit':54B 'web':9A 'within':70B","nicknames":[],"mitigations":[],"who_affected":null,"tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:19:20+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-2026-113270","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-113270","severity":null,"published_at":"2026-10-20T22:19:20+00:00","modified_at":"2026-10-22T23:18:29+00:00","first_seen_at":"2026-10-23T21:57:24+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"}