{"id":"CVE-2026-113183","kind":"vulnerability","aliases":["CVE-2026-113183"],"related":[],"title":"Chrome: FedCM memory corruption lets a crafted web page run code","description":"Memory corruption in FedCM 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":"A memory corruption bug in the FedCM sign-in feature of Google Chrome before 156.0.8078.47 lets a remote attacker run arbitrary code inside the browser sandbox. The attack works through a crafted HTML page the victim opens.","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","linux","macos","runtime","windows"],"not_affected_if":["already-on-156.0.8078.47-or-later"],"how_to_check":"Open chrome://settings/help or run google-chrome --version and compare to 156.0.8078.47","fix":"Update Google Chrome to 156.0.8078.47 or later.","status":"open","published_at":"2026-10-20T22:19:11+00:00","first_seen_at":"2026-10-23T21:57:24+00:00","triaged_at":"2026-10-23T22:36:26+00:00","updated_at":"2026-10-23T22:36:26+00:00","category":"runtime","confidence":0.8,"triage":{"at":"2026-10-23T22:36:26Z","model":"claude-haiku-5-5","output":{"fix":"Update Google Chrome to 156.0.8078.47 or later.","reach":"internet","title":"Chrome: FedCM memory corruption lets a crafted web page run code","impact":"high","summary":"A memory corruption bug in the FedCM sign-in feature of Google Chrome before 156.0.8078.47 lets a remote attacker run arbitrary code inside the browser sandbox. The attack works through a crafted HTML page the victim opens.","category":"runtime","who_cares":["chrome","windows","macos","linux"],"confidence":0.8,"needs_auth":"no","worst_case":"Attacker runs code inside the browser sandbox after a victim visits a page","analyst_note":"","how_to_check":"Open chrome://settings/help or run google-chrome --version and compare to 156.0.8078.47","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":0.000472,"input_tokens":2952,"output_tokens":354,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-113183':14A,17A '-2026':13A,16A '156.0.8078.47':41B,73C 'allow':74C 'arbitrari':47B,81C 'attack':45B,54B,77C 'browser':20B,51B 'bug':29B 'chrome':1A,19A,21B,39B,70C 'chromium':91C 'code':11A,48B,82C 'corrupt':4A,28B,65C 'craft':7A,58B,88C 'cve':12A,15A 'execut':80C 'featur':36B 'fedcm':2A,32B,67C 'googl':38B,69C 'google':18A 'html':59B,89C 'insid':49B,83C 'let':5A,42B 'linux':22B 'maco':23B 'medium':94C 'memori':3A,27B,64C 'open':63B 'page':9A,60B,90C 'potenti':79C 'prior':71C 'remot':44B,76C 'run':10A,46B 'runtim':24B 'sandbox':52B,85C 'secur':92C 'sever':93C 'sign':34B 'sign-in':33B 'via':86C 'victim':62B 'web':8A 'window':25B 'work':55B","nicknames":[],"mitigations":[],"who_affected":null,"tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:19:11+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-2026-113183","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-113183","severity":null,"published_at":"2026-10-20T22:19:11+00:00","modified_at":"2026-10-22T15:31:31+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"}