{"id":"CVE-2026-113009","kind":"vulnerability","aliases":["CVE-2026-113009"],"related":[],"title":"Chrome: use-after-free in WindowControlsOverlay lets a web page run code","description":"Use after free in WindowControlsOverlay in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)","summary":"A use-after-free bug in Google Chrome's WindowControlsOverlay feature lets a remote attacker run arbitrary code inside the browser sandbox when the victim opens a crafted HTML page. Sandbox escape is not stated in the sources.","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":["chrome-at-or-above-156.0.8078.47"],"how_to_check":"Open chrome://version and compare the version to 156.0.8078.47.","fix":"Update Google Chrome to 156.0.8078.47 or later.","status":"open","published_at":"2026-10-20T22:18:51+00:00","first_seen_at":"2026-10-23T21:57:23+00:00","triaged_at":"2026-10-23T22:38:20+00:00","updated_at":"2026-10-23T22:38:20+00:00","category":"runtime","confidence":0.8,"triage":{"at":"2026-10-23T22:38:20Z","model":"claude-haiku-5-5","output":{"fix":"Update Google Chrome to 156.0.8078.47 or later.","reach":"internet","title":"Chrome: use-after-free in WindowControlsOverlay lets a web page run code","impact":"high","summary":"A use-after-free bug in Google Chrome's WindowControlsOverlay feature lets a remote attacker run arbitrary code inside the browser sandbox when the victim opens a crafted HTML page. Sandbox escape is not stated in the sources.","category":"runtime","who_cares":["chrome","desktop","browsers"],"confidence":0.8,"needs_auth":"no","worst_case":"Attacker runs code inside the browser sandbox after the victim visits a page","analyst_note":"","how_to_check":"Open chrome://version and compare the version to 156.0.8078.47.","needs_analyst":false,"not_affected_if":["chrome-at-or-above-156.0.8078.47"],"user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.00047,"input_tokens":2950,"output_tokens":351,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-113009':16A,19A '-2026':15A,18A '156.0.8078.47':75C 'allow':76C 'arbitrari':43B,82C 'attack':41B,79C 'browser':22B,47B 'bug':31B 'chrome':1A,21A,23B,34B,72C 'chromium':92C 'code':13A,44B,83C 'craft':54B,89C 'cve':14A,17A 'desktop':24B 'escap':58B 'execut':81C 'featur':37B 'free':5A,30B,67C 'googl':33B,71C 'google':20A 'html':55B,90C 'insid':45B,84C 'let':8A,38B 'medium':95C 'open':52B 'page':11A,56B,91C 'prior':73C 'remot':40B,78C 'run':12A,42B 'runtim':25B 'sandbox':48B,57B,86C 'secur':93C 'sever':94C 'sourc':64B 'state':61B 'use':3A,28B,65C 'use-after-fre':2A,27B 'via':87C 'victim':51B 'web':10A 'windowcontrolsoverlay':7A,36B,69C","nicknames":[],"mitigations":[],"who_affected":null,"tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:18:51+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":"134c704f-9b21-4f2e-91b3-4a467353bcc0","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-113009","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-113009","severity":null,"published_at":"2026-10-20T22:18:51+00:00","modified_at":"2026-10-22T23:18:24+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"}