{"id":"CVE-2026-126891","kind":"vulnerability","aliases":["CVE-2026-126891"],"related":[],"title":"Chrome: V8 use-after-free lets a crafted web page read memory","description":"Use after free in V8 in Google Chrome prior to 157.0.8103.78 allowed a remote attacker to read memory inside the sandbox via a crafted HTML page. (Chromium security severity: High)","summary":"A use-after-free bug in the V8 JavaScript engine of Google Chrome lets a remote attacker read memory inside the browser sandbox when a victim opens a crafted HTML page. Chromium rates the flaw High severity.","severity":"high","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browser","chrome","desktop","runtime","v8"],"not_affected_if":["chrome-updated"],"how_to_check":"- Open Chrome and check the version under Help > About Google Chrome, or run `chrome --version` on Linux\n- Compare against the fixed version named in the sources: `157.0.8103.78`","fix":"- Google Chrome: move to `157.0.8103.78` or later","status":"open","published_at":"2026-11-11T23:17:18+00:00","first_seen_at":"2026-11-11T23:29:39+00:00","triaged_at":"2026-11-11T23:31:59+00:00","updated_at":"2026-11-11T23:31:59+00:00","category":"runtime","confidence":0.7,"triage":{"at":"2026-11-11T23:31:59Z","model":"claude-haiku-5-5","output":{"fix":"- Google Chrome: move to `157.0.8103.78` or later","reach":"internet","title":"Chrome: V8 use-after-free lets a crafted web page read memory","impact":"medium","summary":"A use-after-free bug in the V8 JavaScript engine of Google Chrome lets a remote attacker read memory inside the browser sandbox when a victim opens a crafted HTML page. Chromium rates the flaw High severity.","audience":"everyone","category":"runtime","nicknames":[],"who_cares":["chrome","browser","v8","desktop"],"confidence":0.7,"fix_status":"available","needs_auth":"no","worst_case":"Attacker reads memory inside the sandbox after the victim visits a page","analyst_note":"","how_to_check":"- Open Chrome and check the version under Help > About Google Chrome, or run `chrome --version` on Linux\n- Compare against the fixed version named in the sources: `157.0.8103.78`","plain_action":"Update Google Chrome to version 157.0.8103.78 or later: 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 is exposed when visiting a malicious web page. Chromium-based browsers that pull V8 from the same codebase may also be affected, but the sources only name Google Chrome. Systems that do not run Chrome can skip it.","user_interaction":"yes","product_ecosystem":"","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000729,"input_tokens":4522,"output_tokens":554,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-126891':16A,19A '-2026':15A,18A '157.0.8103.78':73C 'allow':74C 'attack':42B,77C 'browser':20B,47B 'bug':30B 'chrome':1A,21B,38B,70C 'chromium':57B,89C 'craft':9A,54B,86C 'cve':14A,17A 'desktop':22B 'engin':35B 'flaw':60B 'free':6A,29B,65C 'googl':37B,69C 'high':61B,92C 'html':55B,87C 'insid':45B,81C 'javascript':34B 'let':7A,39B 'memori':13A,44B,80C 'open':52B 'page':11A,56B,88C 'prior':71C 'rate':58B 'read':12A,43B,79C 'remot':41B,76C 'runtim':23B 'sandbox':48B,83C 'secur':90C 'sever':62B,91C 'use':4A,27B,63C 'use-after-fre':3A,26B 'v8':2A,24B,33B,67C 'via':84C 'victim':51B 'web':10A","nicknames":[],"mitigations":[],"who_affected":"Anyone running Google Chrome before 157.0.8103.78 is exposed when visiting a malicious web page. Chromium-based browsers that pull V8 from the same codebase may also be affected, but the sources only name Google Chrome. Systems that do not run Chrome can skip it.","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: Help > About Google Chrome.","pkeys":[],"ptokens":[],"labels":["browser","chrome","desktop","high","runtime","v8"],"campaign_type":null,"search_a":"'-126891':16A,19A '-2026':15A,18A 'chrome':1A 'craft':9A 'cve':14A,17A 'free':6A 'let':7A 'memori':13A 'page':11A 'read':12A 'use':4A 'use-after-fre':3A 'v8':2A 'web':10A","search_b":"'attack':42B 'browser':20B,47B 'bug':30B 'chrome':21B,38B 'chromium':57B 'craft':54B 'desktop':22B 'engin':35B 'flaw':60B 'free':29B 'googl':37B 'high':61B 'html':55B 'insid':45B 'javascript':34B 'let':39B 'memori':44B 'open':52B 'page':56B 'rate':58B 'read':43B 'remot':41B 'runtim':23B 'sandbox':48B 'sever':62B 'use':27B 'use-after-fre':26B 'v8':24B,33B 'victim':51B","search_c":"'157.0.8103.78':73C 'allow':74C 'attack':77C 'chrome':70C 'chromium':89C 'craft':86C 'free':65C 'googl':69C 'high':92C 'html':87C 'insid':81C 'memori':80C 'page':88C 'prior':71C 'read':79C 'remot':76C 'sandbox':83C 'secur':90C 'sever':91C 'use':63C 'v8':67C 'via':84C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-11T23:17:18+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-126891","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126891","severity":null,"published_at":"2026-11-11T23:17:18+00:00","modified_at":"2026-11-11T23:17:18+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"}