{"id":"CVE-2026-126896","kind":"vulnerability","aliases":["CVE-2026-126896"],"related":[],"title":"Chrome: V8 missing authorization lets a crafted web page bypass origin policy","description":"Missing authorization in V8 in Google Chrome prior to 157.0.8103.78 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: High)","summary":"A missing authorization check in the V8 JavaScript engine of Google Chrome lets a remote attacker bypass web origin policy using a crafted HTML page. Chromium rates it High severity; an attacker can read data across sites a visitor is logged into.","severity":"high","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browsers","chrome","end-users","other"],"not_affected_if":["chrome-updated"],"how_to_check":"- Open Chrome, go to Settings > About Chrome, and note the version shown.\n- Check whether the version is below `157.0.8103.78`.","fix":"- Google Chrome: update to `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":"2026-11-11T23:31:54+00:00","updated_at":"2026-11-11T23:31:54+00:00","category":"other","confidence":0.7,"triage":{"at":"2026-11-11T23:31:54Z","model":"claude-haiku-5-5","output":{"fix":"- Google Chrome: update to `157.0.8103.78` or later.","reach":"internet","title":"Chrome: V8 missing authorization lets a crafted web page bypass origin policy","impact":"medium","summary":"A missing authorization check in the V8 JavaScript engine of Google Chrome lets a remote attacker bypass web origin policy using a crafted HTML page. Chromium rates it High severity; an attacker can read data across sites a visitor is logged into.","audience":"everyone","category":"other","nicknames":[],"who_cares":["chrome","browsers","end-users"],"confidence":0.7,"fix_status":"available","needs_auth":"no","worst_case":"Attacker reads data from other sites the visitor uses","analyst_note":"","how_to_check":"- Open Chrome, go to Settings > About Chrome, and note the version shown.\n- Check whether the version is below `157.0.8103.78`.","plain_action":"Update Google Chrome to version 157.0.8103.78 or later: Settings > About Chrome.","product_name":"","needs_analyst":false,"not_affected_if":["chrome-updated"],"who_is_affected":"Anyone running Google Chrome older than 157.0.8103.78 is exposed when they visit a malicious page. Servers and applications are not directly affected; the risk is to browser users.","user_interaction":"yes","product_ecosystem":"","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000697,"input_tokens":4524,"output_tokens":489,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-126896':15A,18A '-2026':14A,17A '157.0.8103.78':74C 'across':59B 'allow':75C 'attack':39B,55B,78C 'author':4A,26B,66C 'browser':19B 'bypass':10A,40B,80C 'check':27B 'chrome':1A,20B,35B,71C 'chromium':49B,89C 'craft':7A,46B,86C 'cve':13A,16A 'data':58B 'end':22B 'end-us':21B 'engin':32B 'googl':34B,70C 'high':52B,92C 'html':47B,87C 'javascript':31B 'let':5A,36B 'log':64B 'miss':3A,25B,65C 'origin':11A,42B,82C 'page':9A,48B,88C 'polici':12A,43B,83C 'prior':72C 'rate':50B 'read':57B 'remot':38B,77C 'secur':90C 'sever':53B,91C 'site':60B 'use':44B 'user':23B 'v8':2A,30B,68C 'via':84C 'visitor':62B 'web':8A,41B,81C","nicknames":[],"mitigations":[],"who_affected":"Anyone running Google Chrome older than 157.0.8103.78 is exposed when they visit a malicious page. Servers and applications are not directly affected; the risk is to browser users.","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: Settings > About Chrome.","pkeys":[],"ptokens":[],"labels":["browsers","chrome","endusers","high","other"],"campaign_type":null,"search_a":"'-126896':15A,18A '-2026':14A,17A 'author':4A 'bypass':10A 'chrome':1A 'craft':7A 'cve':13A,16A 'let':5A 'miss':3A 'origin':11A 'page':9A 'polici':12A 'v8':2A 'web':8A","search_b":"'across':59B 'attack':39B,55B 'author':26B 'browser':19B 'bypass':40B 'check':27B 'chrome':20B,35B 'chromium':49B 'craft':46B 'data':58B 'end':22B 'end-us':21B 'engin':32B 'googl':34B 'high':52B 'html':47B 'javascript':31B 'let':36B 'log':64B 'miss':25B 'origin':42B 'page':48B 'polici':43B 'rate':50B 'read':57B 'remot':38B 'sever':53B 'site':60B 'use':44B 'user':23B 'v8':30B 'visitor':62B 'web':41B","search_c":"'157.0.8103.78':74C 'allow':75C 'attack':78C 'author':66C 'bypass':80C 'chrome':71C 'chromium':89C 'craft':86C 'googl':70C 'high':92C 'html':87C 'miss':65C 'origin':82C 'page':88C 'polici':83C 'prior':72C 'remot':77C 'secur':90C 'sever':91C 'v8':68C 'via':84C 'web':81C","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-2026-126896","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126896","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"}