{"id":"CVE-2026-113040","kind":"vulnerability","aliases":["CVE-2026-113040"],"related":[],"title":"Chrome: crafted HTML page can run code inside the browser sandbox","description":"Improper input validation in Proxy 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: High)","summary":"Google Chrome before 156.0.8078.47 mishandles input in its Proxy component, so a crafted web page can run code inside the sandbox. An attacker who lures a user to such a page gets code execution in the renderer sandbox, which is a step toward a full browser compromise.","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","other","package"],"not_affected_if":["already-updated"],"how_to_check":"Run chrome://version and compare the version with 156.0.8078.47.","fix":"Update Google Chrome to 156.0.8078.47 or later.","status":"open","published_at":"2026-10-20T22:18:55+00:00","first_seen_at":"2026-10-23T21:57:23+00:00","triaged_at":"2026-10-23T22:37:59+00:00","updated_at":"2026-10-23T22:37:59+00:00","category":"package","confidence":0.7,"triage":{"at":"2026-10-23T22:37:59Z","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":"high","summary":"Google Chrome before 156.0.8078.47 mishandles input in its Proxy component, so a crafted web page can run code inside the sandbox. An attacker who lures a user to such a page gets code execution in the renderer sandbox, which is a step toward a full browser compromise.","category":"package","who_cares":["chrome","desktop","browsers"],"confidence":0.7,"needs_auth":"no","worst_case":"Attacker runs code inside Chrome's sandbox via a malicious web page","analyst_note":"","how_to_check":"Run chrome://version and compare the version with 156.0.8078.47.","needs_analyst":false,"not_affected_if":["already-updated"],"user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000464,"input_tokens":2942,"output_tokens":339,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-113040':14A,17A '-2026':13A,16A '156.0.8078.47':28B,82C 'allow':83C 'arbitrari':90C 'attack':47B,86C 'browser':10A,20B,70B 'chrome':1A,19A,21B,26B,79C 'chromium':100C 'code':7A,42B,57B,91C 'compon':34B 'compromis':71B 'craft':2A,37B,97C 'cve':12A,15A 'desktop':22B 'execut':58B,89C 'full':69B 'get':56B 'googl':25B,78C 'google':18A 'high':103C 'html':3A,98C 'improp':72C 'input':30B,73C 'insid':8A,43B,92C 'lure':49B 'mishandl':29B 'packag':24B 'page':4A,39B,55B,99C 'potenti':88C 'prior':80C 'proxi':33B,76C 'remot':85C 'render':61B 'run':6A,41B 'sandbox':11A,45B,62B,94C 'secur':101C 'sever':102C 'step':66B 'toward':67B 'user':51B 'valid':74C 'via':95C 'web':38B","nicknames":[],"mitigations":[],"who_affected":null,"tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:18:55+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-2026-113040","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-113040","severity":null,"published_at":"2026-10-20T22:18:55+00:00","modified_at":"2026-10-22T15:38:28+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"}