{"id":"CVE-2026-121114","kind":"vulnerability","aliases":["CVE-2026-121114"],"related":[],"title":"Chrome: use-after-free in TabStrip lets a web page run code","description":"Use after free in TabStrip in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)","summary":"A memory-handling bug in the TabStrip component of Google Chrome, before 157.0.8103.38, lets a crafted HTML page trigger a use-after-free. A remote attacker can use it to execute arbitrary code outside the browser sandbox.","severity":"high","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browsers","chrome","desktop","runtime"],"not_affected_if":["chrome-up-to-date"],"how_to_check":"- Check the installed Chrome version in the browser's About page or with `chrome://version`; versions below `157.0.8103.38` are affected.","fix":"- Google Chrome: move to `157.0.8103.38` or later.","status":"open","published_at":"2026-11-03T21:17:19+00:00","first_seen_at":"2026-11-03T21:19:18+00:00","triaged_at":"2026-11-03T21:25:04+00:00","updated_at":"2026-11-03T21:25:04+00:00","category":"runtime","confidence":0.8,"triage":{"at":"2026-11-03T21:25:04Z","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 TabStrip lets a web page run code","impact":"high","summary":"A memory-handling bug in the TabStrip component of Google Chrome, before 157.0.8103.38, lets a crafted HTML page trigger a use-after-free. A remote attacker can use it to execute arbitrary code outside the browser sandbox.","audience":"everyone","category":"runtime","nicknames":[],"who_cares":["chrome","desktop","browsers"],"confidence":0.8,"fix_status":"available","needs_auth":"no","worst_case":"Attacker runs arbitrary code outside the browser sandbox via a crafted page","analyst_note":"","how_to_check":"- Check the installed Chrome version in the browser's About page or with `chrome://version`; versions below `157.0.8103.38` are affected.","plain_action":"Update Google Chrome to version 157.0.8103.38 or later.","needs_analyst":false,"not_affected_if":["chrome-up-to-date"],"who_is_affected":"Anyone running Google Chrome before 157.0.8103.38 who visits a malicious or compromised web page. Users on current Chrome builds are not affected.","user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000649,"input_tokens":4104,"output_tokens":477,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-121114':16A,19A '-2026':15A,18A '157.0.8103.38':37B,73C 'allow':74C 'arbitrari':57B,80C 'attack':51B,77C 'browser':20B,61B 'bug':28B 'chrome':1A,21B,35B,70C 'chromium':90C 'code':13A,58B,81C 'compon':32B 'craft':40B,87C 'cve':14A,17A 'desktop':22B 'execut':56B,79C 'free':5A,48B,65C 'googl':34B,69C 'handl':27B 'high':93C 'html':41B,88C 'let':8A,38B 'memori':26B 'memory-handl':25B 'outsid':59B,82C 'page':11A,42B,89C 'prior':71C 'remot':50B,76C 'run':12A 'runtim':23B 'sandbox':62B,84C 'secur':91C 'sever':92C 'tabstrip':7A,31B,67C 'trigger':43B 'use':3A,46B,53B,63C 'use-after-fre':2A,45B 'via':85C 'web':10A","nicknames":[],"mitigations":[],"who_affected":"Anyone running Google Chrome before 157.0.8103.38 who visits a malicious or compromised web page. Users on current Chrome builds are not affected.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"everyone","plain_action":"Update Google Chrome to version 157.0.8103.38 or later.","pkeys":[],"ptokens":[],"labels":["browsers","chrome","desktop","high","runtime"],"campaign_type":null,"first_public_at":"2026-11-03T21:17:19+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-121114","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121114","severity":null,"published_at":"2026-11-03T21:17:19+00:00","modified_at":"2026-11-03T21:17:19+00:00","first_seen_at":"2026-11-03T21:19:18+00:00","fetched_at":"2026-11-03T21:19:18+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"}