{"id":"CVE-2026-126859","kind":"vulnerability","aliases":["CVE-2026-126859"],"related":[],"title":"Chrome: link following in FileSystem lets a crafted page escape the sandbox","description":"Link following in FileSystem in Google Chrome prior to 157.0.8103.78 allowed a remote attacker leveraging social engineering to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)","summary":"A link-following flaw in the FileSystem component of Google Chrome, before version 157.0.8103.78, lets a remote attacker run arbitrary code outside the browser sandbox. The attacker needs the victim to visit a crafted HTML page through social engineering.","severity":"high","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browser","chrome","desktop","linux","macos","other","windows"],"not_affected_if":["chrome-current-version"],"how_to_check":"- Check the installed Chrome version in the browser's About page or with the Chrome version command for your OS.\n- Compare it with `157.0.8103.78`; anything older is affected.","fix":"- Google Chrome: move to `157.0.8103.78` or later.","status":"open","published_at":"2026-11-11T23:17:14+00:00","first_seen_at":"2026-11-11T23:29:36+00:00","triaged_at":"2026-11-11T23:33:30+00:00","updated_at":"2026-11-11T23:33:30+00:00","category":"other","confidence":0.6,"triage":{"at":"2026-11-11T23:33:30Z","model":"claude-haiku-5-5","output":{"fix":"- Google Chrome: move to `157.0.8103.78` or later.","reach":"internet","title":"Chrome: link following in FileSystem lets a crafted page escape the sandbox","impact":"high","summary":"A link-following flaw in the FileSystem component of Google Chrome, before version 157.0.8103.78, lets a remote attacker run arbitrary code outside the browser sandbox. The attacker needs the victim to visit a crafted HTML page through social engineering.","audience":"everyone","category":"other","nicknames":[],"who_cares":["chrome","browser","desktop","windows","macos","linux"],"confidence":0.6,"fix_status":"available","needs_auth":"no","worst_case":"Attacker runs arbitrary code outside the browser sandbox on the victim's machine.","analyst_note":"","how_to_check":"- Check the installed Chrome version in the browser's About page or with the Chrome version command for your OS.\n- Compare it with `157.0.8103.78`; anything older is affected.","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-current-version"],"who_is_affected":"Anyone running Google Chrome older than 157.0.8103.78 on desktop, and other Chromium-based browsers that pick up the same fix, are exposed when they open a malicious page. Managed fleets should confirm the Chrome version on every machine. Users on a current build can skip it.","user_interaction":"yes","product_ecosystem":"","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000743,"input_tokens":4535,"output_tokens":579,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-126859':15A,18A '-2026':14A,17A '157.0.8103.78':40B,75C 'allow':76C 'arbitrari':46B,85C 'attack':44B,53B,79C 'browser':19B,50B 'chrome':1A,20B,37B,72C 'chromium':95C 'code':47B,86C 'compon':34B 'craft':8A,60B,92C 'cve':13A,16A 'desktop':21B 'engin':65B,82C 'escap':10A 'execut':84C 'filesystem':5A,33B,69C 'flaw':30B 'follow':3A,29B,67C 'googl':36B,71C 'high':98C 'html':61B,93C 'let':6A,41B 'leverag':80C 'link':2A,28B,66C 'link-follow':27B 'linux':22B 'maco':23B 'need':54B 'outsid':48B,87C 'page':9A,62B,94C 'prior':73C 'remot':43B,78C 'run':45B 'sandbox':12A,51B,89C 'secur':96C 'sever':97C 'social':64B,81C 'version':39B 'via':90C 'victim':56B 'visit':58B 'window':25B","nicknames":[],"mitigations":[],"who_affected":"Anyone running Google Chrome older than 157.0.8103.78 on desktop, and other Chromium-based browsers that pick up the same fix, are exposed when they open a malicious page. Managed fleets should confirm the Chrome version on every machine. Users on a current build 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: Chrome menu > Help > About Google Chrome.","pkeys":[],"ptokens":[],"labels":["browser","chrome","desktop","high","linux","macos","other","windows"],"campaign_type":null,"search_a":"'-126859':15A,18A '-2026':14A,17A 'chrome':1A 'craft':8A 'cve':13A,16A 'escap':10A 'filesystem':5A 'follow':3A 'let':6A 'link':2A 'page':9A 'sandbox':12A","search_b":"'157.0.8103.78':40B 'arbitrari':46B 'attack':44B,53B 'browser':19B,50B 'chrome':20B,37B 'code':47B 'compon':34B 'craft':60B 'desktop':21B 'engin':65B 'filesystem':33B 'flaw':30B 'follow':29B 'googl':36B 'html':61B 'let':41B 'link':28B 'link-follow':27B 'linux':22B 'maco':23B 'need':54B 'outsid':48B 'page':62B 'remot':43B 'run':45B 'sandbox':51B 'social':64B 'version':39B 'victim':56B 'visit':58B 'window':25B","search_c":"'157.0.8103.78':75C 'allow':76C 'arbitrari':85C 'attack':79C 'chrome':72C 'chromium':95C 'code':86C 'craft':92C 'engin':82C 'execut':84C 'filesystem':69C 'follow':67C 'googl':71C 'high':98C 'html':93C 'leverag':80C 'link':66C 'outsid':87C 'page':94C 'prior':73C 'remot':78C 'sandbox':89C 'secur':96C 'sever':97C 'social':81C 'via':90C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-11T23:17:14+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-126859","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126859","severity":null,"published_at":"2026-11-11T23:17:14+00:00","modified_at":"2026-11-11T23:17:14+00:00","first_seen_at":"2026-11-11T23:29:36+00:00","fetched_at":"2026-11-11T23:29:36+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"}