{"id":"CVE-2026-121030","kind":"vulnerability","aliases":["CVE-2026-121030"],"related":[],"title":"Google Chrome: DevTools authorization flaw lets crafted page escape sandbox","description":"Incorrect authorization in DevTools in Google Chrome prior to 157.0.8103.38 allowed a remote attacker leveraging social engineering to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)","summary":"Chrome's DevTools had an authorization flaw that a remote attacker could exploit through social engineering using a crafted HTML page. The sources say it could potentially run arbitrary code outside the browser sandbox.","severity":"medium","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browser","chrome","desktop","other"],"not_affected_if":["updated-chrome"],"how_to_check":"- Check the installed Chrome version (`chrome://version` in the address bar); versions before `157.0.8103.38` are listed as affected.","fix":"- Google Chrome: move to `157.0.8103.38` or later.","status":"open","published_at":"2026-11-03T21:17:06+00:00","first_seen_at":"2026-11-03T21:19:08+00:00","triaged_at":"2026-11-03T21:27:37+00:00","updated_at":"2026-11-03T21:27:37+00:00","category":"other","confidence":0.7,"triage":{"at":"2026-11-03T21:27:37Z","model":"claude-haiku-5-5","output":{"fix":"- Google Chrome: move to `157.0.8103.38` or later.","reach":"internet","title":"Google Chrome: DevTools authorization flaw lets crafted page escape sandbox","impact":"high","summary":"Chrome's DevTools had an authorization flaw that a remote attacker could exploit through social engineering using a crafted HTML page. The sources say it could potentially run arbitrary code outside the browser sandbox.","audience":"everyone","category":"other","nicknames":[],"who_cares":["chrome","browser","desktop"],"confidence":0.7,"fix_status":"available","needs_auth":"no","worst_case":"Attacker runs arbitrary code outside the browser sandbox on the user's machine.","analyst_note":"","how_to_check":"- Check the installed Chrome version (`chrome://version` in the address bar); versions before `157.0.8103.38` are listed as affected.","plain_action":"Update Google Chrome to version 157.0.8103.38 or later through its settings menu (Help > About Google Chrome).","needs_analyst":false,"not_affected_if":["updated-chrome"],"who_is_affected":"Anyone running Google Chrome before version 157.0.8103.38 who opens a malicious web page that the attacker has tricked them into visiting. Users on updated Chrome builds are not affected.","user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"medium"},"cost_usd":0.000659,"input_tokens":4119,"output_tokens":494,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-121030':13A,16A '-2026':12A,15A '157.0.8103.38':63C 'allow':64C 'arbitrari':48B,74C 'attack':30B,67C 'author':4A,25B,55C 'browser':17B,52B 'chrome':2A,18B,20B,60C 'chromium':84C 'code':49B,75C 'could':31B,45B 'craft':7A,38B,81C 'cve':11A,14A 'desktop':19B 'devtool':3A,22B,57C 'engin':35B,70C 'escap':9A 'execut':73C 'exploit':32B 'flaw':5A,26B 'googl':1A,59C 'html':39B,82C 'incorrect':54C 'let':6A 'leverag':68C 'medium':87C 'outsid':50B,76C 'page':8A,40B,83C 'potenti':46B,72C 'prior':61C 'remot':29B,66C 'run':47B 'sandbox':10A,53B,78C 'say':43B 'secur':85C 'sever':86C 'social':34B,69C 'sourc':42B 'use':36B 'via':79C","nicknames":[],"mitigations":[],"who_affected":"Anyone running Google Chrome before version 157.0.8103.38 who opens a malicious web page that the attacker has tricked them into visiting. Users on updated Chrome builds are not affected.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"everyone","plain_action":"Update Google Chrome to version 157.0.8103.38 or later through its settings menu (Help > About Google Chrome).","pkeys":[],"ptokens":[],"labels":["browser","chrome","desktop","medium","other"],"campaign_type":null,"first_public_at":"2026-11-03T21:17:06+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-121030","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121030","severity":null,"published_at":"2026-11-03T21:17:06+00:00","modified_at":"2026-11-03T21:17:06+00:00","first_seen_at":"2026-11-03T21:19:08+00:00","fetched_at":"2026-11-03T21:19:08+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"}