{"id":"CVE-2026-121090","kind":"vulnerability","aliases":["CVE-2026-121090"],"related":[],"title":"Chrome on iOS: navigation flaw lets a compromised renderer escape sandbox","description":"Improper privilege management in Navigation in Google Chrome on on iOS prior to 157.0.8103.38 allowed a remote attacker who had compromised the renderer process to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)","summary":"Google Chrome on iOS before 157.0.8103.38 has an improper privilege management flaw in its navigation code. A remote attacker who has already compromised the renderer process could potentially run arbitrary code outside the sandbox via a crafted HTML page.","severity":"high","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["chrome","ios","mobile","other"],"not_affected_if":["chrome-updated","non-ios-platforms"],"how_to_check":"- Open Chrome on the iPhone or iPad and check the version under Chrome > Settings > Google Chrome > About Chrome, or confirm it is at least `157.0.8103.38`.","fix":"- Google Chrome on iOS: move to `157.0.8103.38` or later.","status":"open","published_at":"2026-11-03T21:17:14+00:00","first_seen_at":"2026-11-03T21:19:13+00:00","triaged_at":"2026-11-03T21:25:31+00:00","updated_at":"2026-11-03T21:25:31+00:00","category":"other","confidence":0.6,"triage":{"at":"2026-11-03T21:25:31Z","model":"claude-haiku-5-5","output":{"fix":"- Google Chrome on iOS: move to `157.0.8103.38` or later.","reach":"internet","title":"Chrome on iOS: navigation flaw lets a compromised renderer escape sandbox","impact":"high","summary":"Google Chrome on iOS before 157.0.8103.38 has an improper privilege management flaw in its navigation code. A remote attacker who has already compromised the renderer process could potentially run arbitrary code outside the sandbox via a crafted HTML page.","audience":"everyone","category":"other","nicknames":[],"who_cares":["chrome","ios","mobile"],"confidence":0.6,"fix_status":"available","needs_auth":"no","worst_case":"Attacker runs arbitrary code outside the browser sandbox after a renderer compromise","analyst_note":"","how_to_check":"- Open Chrome on the iPhone or iPad and check the version under Chrome > Settings > Google Chrome > About Chrome, or confirm it is at least `157.0.8103.38`.","plain_action":"Update Google Chrome on your iPhone or iPad to version 157.0.8103.38 or later through the App Store.","needs_analyst":false,"not_affected_if":["chrome-updated","non-ios-platforms"],"who_is_affected":"Anyone running Google Chrome on iOS older than 157.0.8103.38. Exploitation requires a renderer compromise first, so the flaw is a second stage that an attacker chains with a browser exploit. Devices on the latest Chrome build are not affected.","user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000692,"input_tokens":4120,"output_tokens":561,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-121090':14A,17A '-2026':13A,16A '157.0.8103.38':26B,73C 'allow':74C 'alreadi':42B 'arbitrari':50B,87C 'attack':39B,77C 'chrome':1A,18B,22B,67C 'chromium':97C 'code':36B,51B,88C 'compromis':8A,43B,80C 'could':47B 'craft':57B,94C 'cve':12A,15A 'escap':10A 'execut':86C 'flaw':5A,32B 'googl':21B,66C 'high':100C 'html':58B,95C 'improp':29B,60C 'io':3A,19B,24B,70C 'let':6A 'manag':31B,62C 'mobil':20B 'navig':4A,35B,64C 'outsid':52B,89C 'page':59B,96C 'potenti':48B,85C 'prior':71C 'privileg':30B,61C 'process':46B,83C 'remot':38B,76C 'render':9A,45B,82C 'run':49B 'sandbox':11A,54B,91C 'secur':98C 'sever':99C 'via':55B,92C","nicknames":[],"mitigations":[],"who_affected":"Anyone running Google Chrome on iOS older than 157.0.8103.38. Exploitation requires a renderer compromise first, so the flaw is a second stage that an attacker chains with a browser exploit. Devices on the latest Chrome build are not affected.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"everyone","plain_action":"Update Google Chrome on your iPhone or iPad to version 157.0.8103.38 or later through the App Store.","pkeys":[],"ptokens":[],"labels":["chrome","high","ios","mobile","other"],"campaign_type":null,"first_public_at":"2026-11-03T21:17:14+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-121090","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121090","severity":null,"published_at":"2026-11-03T21:17:14+00:00","modified_at":"2026-11-03T21:17:14+00:00","first_seen_at":"2026-11-03T21:19:13+00:00","fetched_at":"2026-11-03T21:19:13+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"}