{"id":"CVE-2026-113023","kind":"vulnerability","aliases":["CVE-2026-113023"],"related":[],"title":"Chrome: crafted web page breaks extensions and runs code outside 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 outside the sandbox via a crafted HTML page. (Chromium security severity: Low)","summary":"A flaw in Chrome's Extensions component lets a remote attacker use a crafted HTML page to potentially run arbitrary code outside the browser sandbox. NVD scores it critical (CVSS 9.6), though Chromium rates its own severity as Low.","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":["browser-users","chrome","desktop","other","runtime"],"not_affected_if":["already-updated-chrome"],"how_to_check":"Run chrome://version in Chrome and check whether the version is below 156.0.8078.47.","fix":"Update Google Chrome to 156.0.8078.47 or later.","status":"open","published_at":"2026-10-20T22:18:53+00:00","first_seen_at":"2026-10-23T21:57:23+00:00","triaged_at":"2026-10-23T22:38:08+00:00","updated_at":"2026-10-23T22:38:08+00:00","category":"runtime","confidence":0.8,"triage":{"at":"2026-10-23T22:38:08Z","model":"claude-haiku-5-5","output":{"fix":"Update Google Chrome to 156.0.8078.47 or later.","reach":"internet","title":"Chrome: crafted web page breaks extensions and runs code outside sandbox","impact":"high","summary":"A flaw in Chrome's Extensions component lets a remote attacker use a crafted HTML page to potentially run arbitrary code outside the browser sandbox. NVD scores it critical (CVSS 9.6), though Chromium rates its own severity as Low.","category":"runtime","who_cares":["chrome","browser-users","desktop"],"confidence":0.8,"needs_auth":"no","worst_case":"Attacker runs arbitrary code outside the browser sandbox on the user's machine.","analyst_note":"","how_to_check":"Run chrome://version in Chrome and check whether the version is below 156.0.8078.47.","needs_analyst":false,"not_affected_if":["already-updated-chrome"],"user_interaction":"yes","needs_special_setup":"unknown","severity_if_unknown":"critical"},"cost_usd":0.000473,"input_tokens":2942,"output_tokens":357,"severity_before":"critical"},"analyst_status":null,"analyst_note":null,"search":"'-113023':14A,17A '-2026':13A,16A '156.0.8078.47':76C '9.6':57B 'allow':77C 'arbitrari':46B,84C 'attack':37B,80C 'break':5A 'browser':21B,50B 'browser-us':20B 'chrome':1A,19A,23B,30B,73C 'chromium':59B,94C 'code':9A,47B,85C 'compon':33B 'craft':2A,40B,91C 'critic':55B 'cve':12A,15A 'cvss':56B 'desktop':24B 'execut':83C 'extens':6A,32B,70C 'flaw':28B 'googl':72C 'google':18A 'html':41B,92C 'improp':66C 'input':67C 'let':34B 'low':65B,97C 'nvd':52B 'outsid':10A,48B,86C 'page':4A,42B,93C 'potenti':44B,82C 'prior':74C 'rate':60B 'remot':36B,79C 'run':8A,45B 'runtim':26B 'sandbox':11A,51B,88C 'score':53B 'secur':95C 'sever':63B,96C 'though':58B 'use':38B 'user':22B 'valid':68C 'via':89C 'web':3A","nicknames":[],"mitigations":[],"who_affected":null,"tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:18:53+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-2026-113023","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-113023","severity":null,"published_at":"2026-10-20T22:18:53+00:00","modified_at":"2026-10-22T23:18:25+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"}