{"id":"CVE-2026-113126","kind":"vulnerability","aliases":["CVE-2026-113126"],"related":[],"title":"Chrome: crafted HTML page can run code outside sandbox via memory corruption","description":"Memory corruption in PolicyContainer 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: Medium)","summary":"Google Chrome before 156.0.8078.47 has a memory corruption bug in PolicyContainer. A remote attacker who gets a user to open a crafted HTML page could potentially run arbitrary code outside the browser sandbox.","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":["browsers","chrome","desktop","other","runtime"],"not_affected_if":["already-on-156.0.8078.47-or-later"],"how_to_check":"Open chrome://version in Chrome and compare the version with 156.0.8078.47.","fix":"Update Google Chrome to 156.0.8078.47 or later.","status":"open","published_at":"2026-10-20T22:19:04+00:00","first_seen_at":"2026-10-23T21:57:24+00:00","triaged_at":"2026-10-23T22:37:07+00:00","updated_at":"2026-10-23T22:37:07+00:00","category":"other","confidence":0.8,"triage":{"at":"2026-10-23T22:37:07Z","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 outside sandbox via memory corruption","impact":"high","summary":"Google Chrome before 156.0.8078.47 has a memory corruption bug in PolicyContainer. A remote attacker who gets a user to open a crafted HTML page could potentially run arbitrary code outside the browser sandbox.","category":"other","who_cares":["chrome","desktop","browsers"],"confidence":0.8,"needs_auth":"no","worst_case":"Code runs outside the browser sandbox on the user's machine.","analyst_note":"NVD scores this critical (CVSS 9.6) while the Chromium security severity is Medium; check the Chrome release notes for the official rating.","how_to_check":"Open chrome://version in Chrome and compare the version with 156.0.8078.47.","needs_analyst":true,"not_affected_if":["already-on-156.0.8078.47-or-later"],"user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.001025,"input_tokens":2950,"output_tokens":1459,"severity_before":"critical"},"analyst_status":null,"analyst_note":null,"search":"'-113126':15A,18A '-2026':14A,17A '156.0.8078.47':29B,68C 'allow':69C 'arbitrari':53B,76C 'attack':39B,72C 'browser':21B,57B 'bug':34B 'chrome':1A,20A,22B,27B,65C 'chromium':86C 'code':7A,54B,77C 'corrupt':12A,33B,60C 'could':50B 'craft':2A,47B,83C 'cve':13A,16A 'desktop':23B 'execut':75C 'get':41B 'googl':26B,64C 'google':19A 'html':3A,48B,84C 'medium':89C 'memori':11A,32B,59C 'open':45B 'outsid':8A,55B,78C 'page':4A,49B,85C 'policycontain':36B,62C 'potenti':51B,74C 'prior':66C 'remot':38B,71C 'run':6A,52B 'runtim':25B 'sandbox':9A,58B,80C 'secur':87C 'sever':88C 'user':43B 'via':10A,81C","nicknames":[],"mitigations":[],"who_affected":null,"tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:19:04+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-2026-113126","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-113126","severity":null,"published_at":"2026-10-20T22:19:04+00:00","modified_at":"2026-10-22T23:18:26+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"}