{"id":"CVE-2026-126921","kind":"vulnerability","aliases":["CVE-2026-126921"],"related":[],"title":"Google Chrome: accessibility use-after-free lets a crafted page run code","description":"Use after free in Accessibility 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 Chrome's Accessibility component lets a remote attacker run arbitrary code inside the browser sandbox through a crafted HTML page. The attack needs the victim to open the malicious page.","severity":"high","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browser","chrome","endpoints","other"],"not_affected_if":["chrome-updated"],"how_to_check":"- Check the installed Chrome version in the browser's About page or with `google-chrome --version`; versions before `157.0.8103.78` are affected.","fix":"- Google Chrome: update 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":0.8,"triage":{"at":"2026-11-11T23:31:27Z","model":"claude-haiku-5-5","output":{"fix":"- Google Chrome: update to `157.0.8103.78` or later.","reach":"internet","title":"Google Chrome: accessibility use-after-free lets a crafted page run code","impact":"medium","summary":"A use-after-free bug in Chrome's Accessibility component lets a remote attacker run arbitrary code inside the browser sandbox through a crafted HTML page. The attack needs the victim to open the malicious page.","audience":"everyone","category":"other","nicknames":[],"who_cares":["chrome","browser","endpoints"],"confidence":0.8,"fix_status":"available","needs_auth":"no","worst_case":"code runs inside the browser sandbox after visiting a page","analyst_note":"","how_to_check":"- Check the installed Chrome version in the browser's About page or with `google-chrome --version`; versions before `157.0.8103.78` are affected.","plain_action":"Update Google Chrome to version 157.0.8103.78 or later.","product_name":"","needs_analyst":false,"not_affected_if":["chrome-updated"],"who_is_affected":"Anyone running Google Chrome before 157.0.8103.78 is exposed when they visit a crafted web page. Managed fleets should check Chrome versions across their endpoints.","user_interaction":"yes","product_ecosystem":"","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000684,"input_tokens":4527,"output_tokens":462,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-126921':16A,19A '-2026':15A,18A '157.0.8103.78':70C 'access':3A,32B,64C 'allow':71C 'arbitrari':39B,77C 'attack':37B,51B,74C 'browser':20B,43B 'bug':28B 'chrome':2A,21B,30B,67C 'chromium':87C 'code':13A,40B,78C 'compon':33B 'craft':10A,47B,84C 'cve':14A,17A 'endpoint':22B 'execut':76C 'free':7A,27B,62C 'googl':1A,66C 'high':90C 'html':48B,85C 'insid':41B,79C 'let':8A,34B 'malici':58B 'need':52B 'open':56B 'page':11A,49B,59B,86C 'prior':68C 'remot':36B,73C 'run':12A,38B 'sandbox':44B,81C 'secur':88C 'sever':89C 'use':5A,25B,60C 'use-after-fre':4A,24B 'via':82C 'victim':54B","nicknames":[],"mitigations":[],"who_affected":"Anyone running Google Chrome before 157.0.8103.78 is exposed when they visit a crafted web page. Managed fleets should check Chrome versions across their endpoints.","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.","pkeys":[],"ptokens":[],"labels":["browser","chrome","endpoints","high","other"],"campaign_type":null,"search_a":"'-126921':16A,19A '-2026':15A,18A 'access':3A 'chrome':2A 'code':13A 'craft':10A 'cve':14A,17A 'free':7A 'googl':1A 'let':8A 'page':11A 'run':12A 'use':5A 'use-after-fre':4A","search_b":"'access':32B 'arbitrari':39B 'attack':37B,51B 'browser':20B,43B 'bug':28B 'chrome':21B,30B 'code':40B 'compon':33B 'craft':47B 'endpoint':22B 'free':27B 'html':48B 'insid':41B 'let':34B 'malici':58B 'need':52B 'open':56B 'page':49B,59B 'remot':36B 'run':38B 'sandbox':44B 'use':25B 'use-after-fre':24B 'victim':54B","search_c":"'157.0.8103.78':70C 'access':64C 'allow':71C 'arbitrari':77C 'attack':74C 'chrome':67C 'chromium':87C 'code':78C 'craft':84C 'execut':76C 'free':62C 'googl':66C 'high':90C 'html':85C 'insid':79C 'page':86C 'prior':68C 'remot':73C 'sandbox':81C 'secur':88C 'sever':89C 'use':60C 'via':82C","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-2026-126921","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126921","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"}