{"id":"CVE-2026-113321","kind":"vulnerability","aliases":["CVE-2026-113321"],"related":[],"title":"Chrome: use-after-free in Extensions lets a web page run code","description":"Use after free in Extensions in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)","summary":"A use-after-free bug in the Extensions component of Google Chrome before 156.0.8078.47 lets a remote attacker run arbitrary code inside the browser sandbox. The attacker only needs the victim to load a crafted HTML page.","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":null,"fix":"Update Google Chrome to 156.0.8078.47 or later.","status":"open","published_at":"2026-10-20T22:19:26+00:00","first_seen_at":"2026-10-23T21:57:24+00:00","triaged_at":"2026-10-23T22:35:02+00:00","updated_at":"2026-10-23T22:35:02+00:00","category":"runtime","confidence":0.8,"triage":{"at":"2026-10-23T22:35:02Z","model":"claude-haiku-5-5","output":{"fix":"Update Google Chrome to 156.0.8078.47 or later.","reach":"internet","title":"Chrome: use-after-free in Extensions lets a web page run code","impact":"high","summary":"A use-after-free bug in the Extensions component of Google Chrome before 156.0.8078.47 lets a remote attacker run arbitrary code inside the browser sandbox. The attacker only needs the victim to load a crafted HTML page.","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 page visit","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":0.000453,"input_tokens":2947,"output_tokens":316,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-113321':16A,19A '-2026':15A,18A '156.0.8078.47':42B,76C 'allow':77C 'arbitrari':48B,83C 'attack':46B,55B,80C 'browser':22B,52B 'bug':33B 'chrome':1A,21A,23B,40B,73C 'chromium':93C 'code':13A,49B,84C 'compon':37B 'craft':63B,90C 'cve':14A,17A 'execut':82C 'extens':7A,36B,70C 'free':5A,32B,68C 'googl':39B,72C 'google':20A 'html':64B,91C 'insid':50B,85C 'let':8A,43B 'linux':24B 'load':61B 'maco':25B 'medium':96C 'need':57B 'page':11A,65B,92C 'prior':74C 'remot':45B,79C 'run':12A,47B 'runtim':26B 'sandbox':53B,87C 'secur':94C 'sever':95C 'use':3A,30B,66C 'use-after-fre':2A,29B 'via':88C 'victim':59B 'web':10A 'window':27B","nicknames":[],"mitigations":[],"who_affected":null,"tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:19:26+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-2026-113321","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-113321","severity":null,"published_at":"2026-10-20T22:19:26+00:00","modified_at":"2026-10-21T17:04:21+00:00","first_seen_at":"2026-10-23T21:57:24+00:00","fetched_at":"2026-10-23T22:29:00+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"}