{"id":"CVE-2026-126887","kind":"vulnerability","aliases":["CVE-2026-126887"],"related":[],"title":"Chrome: use-after-free in Animation lets crafted web page run code","description":"Use after free in Animation 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 use-after-free bug in the Animation component of Google Chrome before 157.0.8103.78 lets a remote attacker run arbitrary code inside the browser sandbox. The attacker only needs the victim to open a crafted HTML page.","severity":"high","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browser","chrome","desktop","endpoints","runtime"],"not_affected_if":["chrome-up-to-date","non-chromium-browser"],"how_to_check":"- Open Chrome's About page (chrome://version) and compare the version with `157.0.8103.78`\n- Check the version on managed machines with your device management console","fix":"- Google Chrome: move to `157.0.8103.78` or later","status":"open","published_at":"2026-11-11T23:17:17+00:00","first_seen_at":"2026-11-11T23:29:38+00:00","triaged_at":"2026-11-11T23:32:04+00:00","updated_at":"2026-11-11T23:32:04+00:00","category":"runtime","confidence":0.8,"triage":{"at":"2026-11-11T23:32:04Z","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 Animation lets crafted web page run code","impact":"high","summary":"A use-after-free bug in the Animation component of Google Chrome before 157.0.8103.78 lets a remote attacker run arbitrary code inside the browser sandbox. The attacker only needs the victim to open a crafted HTML page.","audience":"everyone","category":"runtime","nicknames":[],"who_cares":["chrome","browser","desktop","endpoints"],"confidence":0.8,"fix_status":"available","needs_auth":"no","worst_case":"Attacker runs code inside the browser sandbox after the victim visits a page","analyst_note":"","how_to_check":"- Open Chrome's About page (chrome://version) and compare the version with `157.0.8103.78`\n- Check the version on managed machines with your device management console","plain_action":"Update Google Chrome to version 157.0.8103.78 or later: open the Chrome menu, choose Help, then About Google Chrome.","product_name":"","needs_analyst":false,"not_affected_if":["chrome-up-to-date","non-chromium-browser"],"who_is_affected":"Anyone running Google Chrome older than 157.0.8103.78 who opens a malicious web page is exposed. Servers and automated systems that do not browse the web with Chrome are not affected by this flaw directly.","user_interaction":"yes","product_ecosystem":"","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000724,"input_tokens":4528,"output_tokens":543,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-126887':16A,19A '-2026':15A,18A '157.0.8103.78':39B,73C 'allow':74C 'anim':7A,33B,67C 'arbitrari':45B,80C 'attack':43B,52B,77C 'browser':20B,49B 'bug':30B 'chrome':1A,21B,37B,70C 'chromium':90C 'code':13A,46B,81C 'compon':34B 'craft':9A,60B,87C 'cve':14A,17A 'desktop':22B 'endpoint':23B 'execut':79C 'free':5A,29B,65C 'googl':36B,69C 'high':93C 'html':61B,88C 'insid':47B,82C 'let':8A,40B 'need':54B 'open':58B 'page':11A,62B,89C 'prior':71C 'remot':42B,76C 'run':12A,44B 'runtim':24B 'sandbox':50B,84C 'secur':91C 'sever':92C 'use':3A,27B,63C 'use-after-fre':2A,26B 'via':85C 'victim':56B 'web':10A","nicknames":[],"mitigations":[],"who_affected":"Anyone running Google Chrome older than 157.0.8103.78 who opens a malicious web page is exposed. Servers and automated systems that do not browse the web with Chrome are not affected by this flaw directly.","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: open the Chrome menu, choose Help, then About Google Chrome.","pkeys":[],"ptokens":[],"labels":["browser","chrome","desktop","endpoints","high","runtime"],"campaign_type":null,"search_a":"'-126887':16A,19A '-2026':15A,18A 'anim':7A 'chrome':1A 'code':13A 'craft':9A 'cve':14A,17A 'free':5A 'let':8A 'page':11A 'run':12A 'use':3A 'use-after-fre':2A 'web':10A","search_b":"'157.0.8103.78':39B 'anim':33B 'arbitrari':45B 'attack':43B,52B 'browser':20B,49B 'bug':30B 'chrome':21B,37B 'code':46B 'compon':34B 'craft':60B 'desktop':22B 'endpoint':23B 'free':29B 'googl':36B 'html':61B 'insid':47B 'let':40B 'need':54B 'open':58B 'page':62B 'remot':42B 'run':44B 'runtim':24B 'sandbox':50B 'use':27B 'use-after-fre':26B 'victim':56B","search_c":"'157.0.8103.78':73C 'allow':74C 'anim':67C 'arbitrari':80C 'attack':77C 'chrome':70C 'chromium':90C 'code':81C 'craft':87C 'execut':79C 'free':65C 'googl':69C 'high':93C 'html':88C 'insid':82C 'page':89C 'prior':71C 'remot':76C 'sandbox':84C 'secur':91C 'sever':92C 'use':63C 'via':85C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-11T23:17:17+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-126887","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126887","severity":null,"published_at":"2026-11-11T23:17:17+00:00","modified_at":"2026-11-11T23:17:18+00:00","first_seen_at":"2026-11-11T23:29:38+00:00","fetched_at":"2026-11-11T23:29:38+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"}