{"id":"CVE-2026-121069","kind":"vulnerability","aliases":["CVE-2026-121069"],"related":[],"title":"Chrome: use-after-free in Track lets a web page run code","description":"Use after free in Track in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Low)","summary":"A use-after-free bug in the Track component of Google Chrome before 157.0.8103.38 lets a remote attacker run code inside the browser sandbox through a crafted HTML page. Chromium rates the security severity as Low.","severity":"low","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browsers","chrome","linux","macos","runtime","windows"],"not_affected_if":["chrome-updated"],"how_to_check":"- Open Chrome and check the version under Chrome menu > Help > About Google Chrome, or run `google-chrome --version` on Linux.\n- Look for the installed build on managed fleets via your device management console; unknown otherwise.","fix":"- Google Chrome: move to `157.0.8103.38` or later.","status":"open","published_at":"2026-11-03T21:17:11+00:00","first_seen_at":"2026-11-03T21:19:11+00:00","triaged_at":"2026-11-03T21:27:00+00:00","updated_at":"2026-11-03T21:27:00+00:00","category":"runtime","confidence":0.6,"triage":{"at":"2026-11-03T21:27:00Z","model":"claude-haiku-5-5","output":{"fix":"- Google Chrome: move to `157.0.8103.38` or later.","reach":"internet","title":"Chrome: use-after-free in Track lets a web page run code","impact":"medium","summary":"A use-after-free bug in the Track component of Google Chrome before 157.0.8103.38 lets a remote attacker run code inside the browser sandbox through a crafted HTML page. Chromium rates the security severity as Low.","audience":"everyone","category":"runtime","nicknames":[],"who_cares":["chrome","browsers","windows","macos","linux"],"confidence":0.6,"fix_status":"available","needs_auth":"no","worst_case":"Attacker runs code inside the browser sandbox via a crafted page","analyst_note":"","how_to_check":"- Open Chrome and check the version under Chrome menu > Help > About Google Chrome, or run `google-chrome --version` on Linux.\n- Look for the installed build on managed fleets via your device management console; unknown otherwise.","plain_action":"Update Google Chrome to version 157.0.8103.38 or later by restarting the browser after it finishes updating.","needs_analyst":false,"not_affected_if":["chrome-updated"],"who_is_affected":"Any device running Google Chrome older than 157.0.8103.38 is exposed when a user opens a crafted web page. Managed fleets and personal browsers are both in scope; the sources do not say whether the flaw needs a specific feature enabled.","user_interaction":"yes","needs_special_setup":"unknown","severity_if_unknown":"low"},"cost_usd":0.000679,"input_tokens":4100,"output_tokens":538,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-121069':16A,19A '-2026':15A,18A '157.0.8103.38':40B,73C 'allow':74C 'arbitrari':80C 'attack':44B,77C 'browser':20B,49B 'bug':31B 'chrome':1A,21B,38B,70C 'chromium':56B,90C 'code':13A,46B,81C 'compon':35B 'craft':53B,87C 'cve':14A,17A 'execut':79C 'free':5A,30B,65C 'googl':37B,69C 'html':54B,88C 'insid':47B,82C 'let':8A,41B 'linux':22B 'low':62B,93C 'maco':23B 'page':11A,55B,89C 'prior':71C 'rate':57B 'remot':43B,76C 'run':12A,45B 'runtim':24B 'sandbox':50B,84C 'secur':59B,91C 'sever':60B,92C 'track':7A,34B,67C 'use':3A,28B,63C 'use-after-fre':2A,27B 'via':85C 'web':10A 'window':25B","nicknames":[],"mitigations":[],"who_affected":"Any device running Google Chrome older than 157.0.8103.38 is exposed when a user opens a crafted web page. Managed fleets and personal browsers are both in scope; the sources do not say whether the flaw needs a specific feature enabled.","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 by restarting the browser after it finishes updating.","pkeys":[],"ptokens":[],"labels":["browsers","chrome","linux","low","macos","runtime","windows"],"campaign_type":null,"first_public_at":"2026-11-03T21:17:11+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-121069","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121069","severity":null,"published_at":"2026-11-03T21:17:11+00:00","modified_at":"2026-11-03T21:17:11+00:00","first_seen_at":"2026-11-03T21:19:11+00:00","fetched_at":"2026-11-03T21:19:11+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"}