{"id":"CVE-2026-126919","kind":"vulnerability","aliases":["CVE-2026-126919"],"related":[],"title":"Chrome: use-after-free in BrowserTag lets a web page run code","description":"Use after free in BrowserTag in Google Chrome prior to 157.0.8103.78 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)","summary":"A memory-handling bug in the BrowserTag component of Google Chrome lets a crafted HTML page make the browser run code. The sources say the code runs inside the browser sandbox, not outside it.","severity":"high","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browsers","chrome","desktop","other"],"not_affected_if":["chrome-up-to-date"],"how_to_check":"- Open Chrome, go to `chrome://settings/help`, and read the version; unknown whether this is affected unless it is below `157.0.8103.78`\n- Check the Chrome version on managed machines with your device management tool","fix":"- Google Chrome: move to `157.0.8103.78` or later","status":"open","published_at":"2026-11-11T23:17:22+00:00","first_seen_at":"2026-11-11T23:29:41+00:00","triaged_at":"2026-11-11T23:31:27+00:00","updated_at":"2026-11-11T23:31:27+00:00","category":"other","confidence":0.6,"triage":{"at":"2026-11-11T23:31:27Z","model":"claude-haiku-5-5","output":{"fix":"- Google Chrome: move to `157.0.8103.78` or later","reach":"internet","title":"Chrome: use-after-free in BrowserTag lets a web page run code","impact":"high","summary":"A memory-handling bug in the BrowserTag component of Google Chrome lets a crafted HTML page make the browser run code. The sources say the code runs inside the browser sandbox, not outside it.","audience":"everyone","category":"other","nicknames":[],"who_cares":["chrome","browsers","desktop"],"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, go to `chrome://settings/help`, and read the version; unknown whether this is affected unless it is below `157.0.8103.78`\n- Check the Chrome version on managed machines with your device management tool","plain_action":"Update Google Chrome to version 157.0.8103.78 or later, using the browser's built-in update check.","product_name":"","needs_analyst":false,"not_affected_if":["chrome-up-to-date"],"who_is_affected":"Anyone running Google Chrome before version 157.0.8103.78 who opens a malicious or compromised web page. Users on current Chrome builds are not affected.","user_interaction":"yes","product_ecosystem":"","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000706,"input_tokens":4534,"output_tokens":506,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-126919':16A,19A '-2026':15A,18A '157.0.8103.78':67C 'allow':68C 'arbitrari':74C 'attack':71C 'browser':20B,42B,53B 'browsertag':7A,30B,61C 'bug':27B 'chrome':1A,21B,34B,64C 'chromium':84C 'code':13A,44B,49B,75C 'compon':31B 'craft':37B,81C 'cve':14A,17A 'desktop':22B 'execut':73C 'free':5A,59C 'googl':33B,63C 'handl':26B 'high':87C 'html':38B,82C 'insid':51B,76C 'let':8A,35B 'make':40B 'memori':25B 'memory-handl':24B 'outsid':56B 'page':11A,39B,83C 'prior':65C 'remot':70C 'run':12A,43B,50B 'sandbox':54B,78C 'say':47B 'secur':85C 'sever':86C 'sourc':46B 'use':3A,57C 'use-after-fre':2A 'via':79C 'web':10A","nicknames":[],"mitigations":[],"who_affected":"Anyone running Google Chrome before version 157.0.8103.78 who opens 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 157.0.8103.78 or later, using the browser's built-in update check.","pkeys":[],"ptokens":[],"labels":["browsers","chrome","desktop","high","other"],"campaign_type":null,"search_a":"'-126919':16A,19A '-2026':15A,18A 'browsertag':7A 'chrome':1A 'code':13A 'cve':14A,17A 'free':5A 'let':8A 'page':11A 'run':12A 'use':3A 'use-after-fre':2A 'web':10A","search_b":"'browser':20B,42B,53B 'browsertag':30B 'bug':27B 'chrome':21B,34B 'code':44B,49B 'compon':31B 'craft':37B 'desktop':22B 'googl':33B 'handl':26B 'html':38B 'insid':51B 'let':35B 'make':40B 'memori':25B 'memory-handl':24B 'outsid':56B 'page':39B 'run':43B,50B 'sandbox':54B 'say':47B 'sourc':46B","search_c":"'157.0.8103.78':67C 'allow':68C 'arbitrari':74C 'attack':71C 'browsertag':61C 'chrome':64C 'chromium':84C 'code':75C 'craft':81C 'execut':73C 'free':59C 'googl':63C 'high':87C 'html':82C 'insid':76C 'page':83C 'prior':65C 'remot':70C 'sandbox':78C 'secur':85C 'sever':86C 'use':57C 'via':79C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-11T23:17:22+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-126919","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126919","severity":null,"published_at":"2026-11-11T23:17:22+00:00","modified_at":"2026-11-11T23:17:22+00:00","first_seen_at":"2026-11-11T23:29:41+00:00","fetched_at":"2026-11-11T23:29:41+00:00","note":null}],"documents":[],"disclosures":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}