{"id":"CVE-2026-118330","kind":"vulnerability","aliases":["CVE-2026-118330"],"related":[],"title":"Chrome on Windows: use-after-free lets a crafted page run code in sandbox","description":"Use after free in Browser in Google Chrome on on Windows prior to 156.0.8078.73 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)","summary":"A use-after-free bug in the Browser component of Google Chrome on Windows lets a remote attacker run arbitrary code inside the browser sandbox when a user opens a crafted HTML page. Chromium rates it High severity.","severity":"high","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browser","chrome","endpoints","other","windows"],"not_affected_if":["chrome-updated","non-windows"],"how_to_check":"- Open Chrome, go to `chrome://settings/help` and read the installed version\n- Check the version with `chrome --version` on the machine, where the browser is installed","fix":"- Update Google Chrome on Windows to `156.0.8078.73` or later, via `chrome://settings/help` or your managed update tool","status":"open","published_at":"2026-10-27T23:17:01+00:00","first_seen_at":"2026-10-27T23:29:43+00:00","triaged_at":"2026-10-27T23:31:53+00:00","updated_at":"2026-10-27T23:31:53+00:00","category":"other","confidence":0.7,"triage":{"at":"2026-10-27T23:31:53Z","model":"claude-haiku-5-5","output":{"fix":"- Update Google Chrome on Windows to `156.0.8078.73` or later, via `chrome://settings/help` or your managed update tool","reach":"internet","title":"Chrome on Windows: use-after-free lets a crafted page run code in sandbox","impact":"medium","summary":"A use-after-free bug in the Browser component of Google Chrome on Windows lets a remote attacker run arbitrary code inside the browser sandbox when a user opens a crafted HTML page. Chromium rates it High severity.","category":"other","nicknames":[],"who_cares":["windows","chrome","browser","endpoints"],"confidence":0.7,"needs_auth":"no","worst_case":"Attacker runs code inside the browser sandbox on the visitor's machine","analyst_note":"","how_to_check":"- Open Chrome, go to `chrome://settings/help` and read the installed version\n- Check the version with `chrome --version` on the machine, where the browser is installed","needs_analyst":false,"not_affected_if":["chrome-updated","non-windows"],"who_is_affected":"Any Windows machine running Google Chrome older than `156.0.8078.73` is exposed. Exposure needs a user to visit a page the attacker controls, so managed fleets with auto-update enabled are usually patched quickly. Teams on Chromium-based builds that lag behind upstream should check their own builds.","user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000584,"input_tokens":3297,"output_tokens":508,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-118330':18A,21A '-2026':17A,20A '156.0.8078.73':79C 'allow':80C 'arbitrari':47B,86C 'attack':45B,83C 'browser':22B,35B,51B,70C 'bug':32B 'chrome':1A,23B,39B,73C 'chromium':61B,96C 'code':13A,48B,87C 'compon':36B 'craft':10A,58B,93C 'cve':16A,19A 'endpoint':24B 'execut':85C 'free':7A,31B,68C 'googl':38B,72C 'high':64B,99C 'html':59B,94C 'insid':49B,88C 'let':8A,42B 'open':56B 'page':11A,60B,95C 'prior':77C 'rate':62B 'remot':44B,82C 'run':12A,46B 'sandbox':15A,52B,90C 'secur':97C 'sever':65B,98C 'use':5A,29B,66C 'use-after-fre':4A,28B 'user':55B 'via':91C 'window':3A,26B,41B,76C","nicknames":[],"mitigations":[],"who_affected":"Any Windows machine running Google Chrome older than `156.0.8078.73` is exposed. Exposure needs a user to visit a page the attacker controls, so managed fleets with auto-update enabled are usually patched quickly. Teams on Chromium-based builds that lag behind upstream should check their own builds.","tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-27T23:17:01+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-118330","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-118330","severity":null,"published_at":"2026-10-27T23:17:01+00:00","modified_at":"2026-10-27T23:17:01+00:00","first_seen_at":"2026-10-27T23:29:43+00:00","fetched_at":"2026-10-27T23:29:43+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"}