{"id":"CVE-2026-121175","kind":"vulnerability","aliases":["CVE-2026-121175"],"related":[],"title":"Chrome: crafted web page can bypass site isolation protections","description":"Improper resource exposure in ORB in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to bypass site isolation via a crafted HTML page. (Chromium security severity: Low)","summary":"Google Chrome before 157.0.8103.38 has an improper resource exposure flaw in its Opaque Response Blocking (ORB) component. A remote attacker can use a crafted HTML page to bypass site isolation and read data from other sites.","severity":"low","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browsers","chrome","desktop","runtime"],"not_affected_if":["chrome-157.0.8103.38-or-later"],"how_to_check":"- Check the installed Chrome version at chrome://settings/help and compare it with `157.0.8103.38`","fix":"- Google Chrome: move to `157.0.8103.38` or later","status":"open","published_at":"2026-11-03T21:17:25+00:00","first_seen_at":"2026-11-03T21:19:24+00:00","triaged_at":"2026-11-03T21:23:13+00:00","updated_at":"2026-11-03T21:23:13+00:00","category":"runtime","confidence":0.6,"triage":{"at":"2026-11-03T21:23:13Z","model":"claude-haiku-5-5","output":{"fix":"- Google Chrome: move to `157.0.8103.38` or later","reach":"internet","title":"Chrome: crafted web page can bypass site isolation protections","impact":"medium","summary":"Google Chrome before 157.0.8103.38 has an improper resource exposure flaw in its Opaque Response Blocking (ORB) component. A remote attacker can use a crafted HTML page to bypass site isolation and read data from other sites.","audience":"everyone","category":"runtime","nicknames":[],"who_cares":["chrome","desktop","browsers"],"confidence":0.6,"fix_status":"available","needs_auth":"no","worst_case":"Attacker reads cross-site data from a visited page","analyst_note":"","how_to_check":"- Check the installed Chrome version at chrome://settings/help and compare it with `157.0.8103.38`\n- unknown for other checks; the sources do not say","plain_action":"Update Google Chrome to version 157.0.8103.38 or later, then restart the browser.","needs_analyst":false,"not_affected_if":["chrome-157.0.8103.38-or-later"],"who_is_affected":"Any Chrome installation older than 157.0.8103.38 is affected, since the flaw is in the browser itself and is triggered by visiting a malicious web page. Exposure does not depend on server configuration. Users on Chrome 157.0.8103.38 or later are not affected.","user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"low"},"cost_usd":0.00067,"input_tokens":4098,"output_tokens":520,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-121175':12A,15A '-2026':11A,14A '157.0.8103.38':23B,66C 'allow':67C 'attack':39B,70C 'block':34B 'browser':16B 'bypass':6A,47B,72C 'chrome':1A,17B,21B,63C 'chromium':80C 'compon':36B 'craft':2A,43B,77C 'cve':10A,13A 'data':52B 'desktop':18B 'exposur':28B,58C 'flaw':29B 'googl':20B,62C 'html':44B,78C 'improp':26B,56C 'isol':8A,49B,74C 'low':83C 'opaqu':32B 'orb':35B,60C 'page':4A,45B,79C 'prior':64C 'protect':9A 'read':51B 'remot':38B,69C 'resourc':27B,57C 'respons':33B 'runtim':19B 'secur':81C 'sever':82C 'site':7A,48B,55B,73C 'use':41B 'via':75C 'web':3A","nicknames":[],"mitigations":[],"who_affected":"Any Chrome installation older than 157.0.8103.38 is affected, since the flaw is in the browser itself and is triggered by visiting a malicious web page. Exposure does not depend on server configuration. Users on Chrome 157.0.8103.38 or later are not affected.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"everyone","plain_action":"Update Google Chrome to version 157.0.8103.38 or later, then restart the browser.","pkeys":[],"ptokens":[],"labels":["browsers","chrome","desktop","low","runtime"],"campaign_type":null,"first_public_at":"2026-11-03T21:17:25+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-121175","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121175","severity":null,"published_at":"2026-11-03T21:17:25+00:00","modified_at":"2026-11-03T21:17:25+00:00","first_seen_at":"2026-11-03T21:19:24+00:00","fetched_at":"2026-11-03T21:19:24+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}