{"id":"CVE-2026-113264","kind":"vulnerability","aliases":["CVE-2026-113264"],"related":[],"title":"Chrome: crafted HTML page can run code inside the browser sandbox","description":"Improper input validation in Extensions in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)","summary":"Google Chrome before 156.0.8078.47 has an input validation flaw in its Extensions component. A remote attacker who gets a user to open a crafted HTML page can potentially execute arbitrary code inside the sandbox.","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":["browser","chrome","desktop","runtime"],"not_affected_if":["already-on-156.0.8078.47-or-later"],"how_to_check":null,"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":"2026-10-23T22:35:36+00:00","updated_at":"2026-10-23T22:35:36+00:00","category":"runtime","confidence":0.7,"triage":{"at":"2026-10-23T22:35:36Z","model":"claude-haiku-5-5","output":{"fix":"Update Google Chrome to 156.0.8078.47 or later.","reach":"internet","title":"Chrome: crafted HTML page can run code inside the browser sandbox","impact":"medium","summary":"Google Chrome before 156.0.8078.47 has an input validation flaw in its Extensions component. A remote attacker who gets a user to open a crafted HTML page can potentially execute arbitrary code inside the sandbox.","category":"runtime","who_cares":["chrome","desktop","browser"],"confidence":0.7,"needs_auth":"no","worst_case":"Code runs inside the browser sandbox after a user visits a page","analyst_note":"","how_to_check":"unknown","needs_analyst":false,"not_affected_if":["already-on-156.0.8078.47-or-later"],"user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.00045,"input_tokens":2942,"output_tokens":312,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-113264':14A,17A '-2026':13A,16A '156.0.8078.47':27B,68C 'allow':69C 'arbitrari':53B,76C 'attack':39B,72C 'browser':10A,20B 'chrome':1A,19A,21B,25B,65C 'chromium':86C 'code':7A,54B,77C 'compon':36B 'craft':2A,47B,83C 'cve':12A,15A 'desktop':22B 'execut':52B,75C 'extens':35B,62C 'flaw':32B 'get':41B 'googl':24B,64C 'google':18A 'html':3A,48B,84C 'improp':58C 'input':30B,59C 'insid':8A,55B,78C 'medium':89C 'open':45B 'page':4A,49B,85C 'potenti':51B,74C 'prior':66C 'remot':38B,71C 'run':6A 'runtim':23B 'sandbox':11A,57B,80C 'secur':87C 'sever':88C 'user':43B 'valid':31B,60C 'via':81C","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:U/C:H/I:H/A:H","cvss_by":"nvd@nist.gov","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-113264","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-113264","severity":null,"published_at":"2026-10-20T22:19:20+00:00","modified_at":"2026-10-21T17:09:14+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"}