{"id":"CVE-2026-126895","kind":"vulnerability","aliases":["CVE-2026-126895"],"related":[],"title":"Chrome: use-after-free in CSS lets a crafted web page run code","description":"Use after free in CSS 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: Critical)","summary":"A use-after-free flaw in the CSS engine of Google Chrome, before 157.0.8103.78, lets a crafted HTML page run arbitrary code inside the browser sandbox. Chromium rates it Critical.","severity":"critical","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browser","chrome","desktop","mobile","other"],"not_affected_if":["chrome-updated"],"how_to_check":"- Open Chrome's version under Settings > About Chrome, or run `chrome --version` on the machine and compare with `157.0.8103.78`.","fix":"- Google Chrome: `157.0.8103.78` or later.","status":"open","published_at":"2026-11-11T23:17:19+00:00","first_seen_at":"2026-11-11T23:29:39+00:00","triaged_at":"2026-11-11T23:31:56+00:00","updated_at":"2026-11-11T23:31:56+00:00","category":"other","confidence":0.8,"triage":{"at":"2026-11-11T23:31:56Z","model":"claude-haiku-5-5","output":{"fix":"- Google Chrome: `157.0.8103.78` or later.","reach":"internet","title":"Chrome: use-after-free in CSS lets a crafted web page run code","impact":"high","summary":"A use-after-free flaw in the CSS engine of Google Chrome, before 157.0.8103.78, lets a crafted HTML page run arbitrary code inside the browser sandbox. Chromium rates it Critical.","audience":"everyone","category":"other","nicknames":[],"who_cares":["chrome","browser","desktop","mobile"],"confidence":0.8,"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's version under Settings > About Chrome, or run `chrome --version` on the machine and compare with `157.0.8103.78`.","plain_action":"Update Google Chrome to version 157.0.8103.78 or later: Chrome menu > Help > About Google Chrome.","product_name":"","needs_analyst":false,"not_affected_if":["chrome-updated"],"who_is_affected":"Anyone running Google Chrome before 157.0.8103.78 who visits a page that could be crafted by an attacker. The flaw needs only a visit to a malicious HTML page; it is not limited to managed or enterprise setups. Systems on a current Chrome build are not affected.","user_interaction":"yes","product_ecosystem":"","needs_special_setup":"no","severity_if_unknown":"critical"},"cost_usd":0.000714,"input_tokens":4531,"output_tokens":521,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-126895':17A,20A '-2026':16A,19A '157.0.8103.78':39B,66C 'allow':67C 'arbitrari':46B,73C 'attack':70C 'browser':21B,50B 'chrome':1A,22B,37B,63C 'chromium':52B,83C 'code':14A,47B,74C 'craft':10A,42B,80C 'critic':55B,86C 'css':7A,33B,60C 'cve':15A,18A 'desktop':23B 'engin':34B 'execut':72C 'flaw':30B 'free':5A,29B,58C 'googl':36B,62C 'html':43B,81C 'insid':48B,75C 'let':8A,40B 'mobil':24B 'page':12A,44B,82C 'prior':64C 'rate':53B 'remot':69C 'run':13A,45B 'sandbox':51B,77C 'secur':84C 'sever':85C 'use':3A,27B,56C 'use-after-fre':2A,26B 'via':78C 'web':11A","nicknames":[],"mitigations":[],"who_affected":"Anyone running Google Chrome before 157.0.8103.78 who visits a page that could be crafted by an attacker. The flaw needs only a visit to a malicious HTML page; it is not limited to managed or enterprise setups. Systems on a current Chrome build 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: Chrome menu > Help > About Google Chrome.","pkeys":[],"ptokens":[],"labels":["browser","chrome","critical","desktop","mobile","other"],"campaign_type":null,"search_a":"'-126895':17A,20A '-2026':16A,19A 'chrome':1A 'code':14A 'craft':10A 'css':7A 'cve':15A,18A 'free':5A 'let':8A 'page':12A 'run':13A 'use':3A 'use-after-fre':2A 'web':11A","search_b":"'157.0.8103.78':39B 'arbitrari':46B 'browser':21B,50B 'chrome':22B,37B 'chromium':52B 'code':47B 'craft':42B 'critic':55B 'css':33B 'desktop':23B 'engin':34B 'flaw':30B 'free':29B 'googl':36B 'html':43B 'insid':48B 'let':40B 'mobil':24B 'page':44B 'rate':53B 'run':45B 'sandbox':51B 'use':27B 'use-after-fre':26B","search_c":"'157.0.8103.78':66C 'allow':67C 'arbitrari':73C 'attack':70C 'chrome':63C 'chromium':83C 'code':74C 'craft':80C 'critic':86C 'css':60C 'execut':72C 'free':58C 'googl':62C 'html':81C 'insid':75C 'page':82C 'prior':64C 'remot':69C 'sandbox':77C 'secur':84C 'sever':85C 'use':56C 'via':78C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-11T23:17:19+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-126895","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126895","severity":null,"published_at":"2026-11-11T23:17:19+00:00","modified_at":"2026-11-11T23:17:19+00:00","first_seen_at":"2026-11-11T23:29:39+00:00","fetched_at":"2026-11-11T23:29:39+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"}