{"id":"CVE-2026-121045","kind":"vulnerability","aliases":["CVE-2026-121045"],"related":[],"title":"Chrome on Mac: crafted page can spoof browser UI elements","description":"UI misrepresentation in Browser in Google Chrome on on Mac prior to 157.0.8103.38 allowed a remote attacker leveraging social engineering to spoof UI elements via a crafted HTML page. (Chromium security severity: Low)","summary":"Chrome on Mac before 157.0.8103.38 let a remote attacker use a crafted HTML page, combined with social engineering, to make browser UI elements appear spoofed. The description rates it Low under Chromium's security severity scale.","severity":"low","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browser","chrome","macos","runtime"],"not_affected_if":["chrome-updated","non-mac-platform"],"how_to_check":"- Check the installed Chrome version in Chrome's About page (chrome://settings/help) or `google-chrome --version` on managed Macs","fix":"- Google Chrome on Mac: `157.0.8103.38` or later","status":"open","published_at":"2026-11-03T21:17:08+00:00","first_seen_at":"2026-11-03T21:19:09+00:00","triaged_at":"2026-11-03T21:27:22+00:00","updated_at":"2026-11-03T21:27:22+00:00","category":"runtime","confidence":0.6,"triage":{"at":"2026-11-03T21:27:22Z","model":"claude-haiku-5-5","output":{"fix":"- Google Chrome on Mac: `157.0.8103.38` or later","reach":"internet","title":"Chrome on Mac: crafted page can spoof browser UI elements","impact":"low","summary":"Chrome on Mac before 157.0.8103.38 let a remote attacker use a crafted HTML page, combined with social engineering, to make browser UI elements appear spoofed. The description rates it Low under Chromium's security severity scale.","audience":"everyone","category":"runtime","nicknames":[],"who_cares":["chrome","macos","browser"],"confidence":0.6,"fix_status":"available","needs_auth":"no","worst_case":"user is tricked by spoofed browser interface elements","analyst_note":"","how_to_check":"- Check the installed Chrome version in Chrome's About page (chrome://settings/help) or `google-chrome --version` on managed Macs\n- unknown","plain_action":"Update Google Chrome on your Mac to version 157.0.8103.38 or later.","needs_analyst":false,"not_affected_if":["chrome-updated","non-mac-platform"],"who_is_affected":"Mac installs of Google Chrome before 157.0.8103.38 are affected. The attack needs a user to visit a crafted page that tricks them, so any Mac user browsing the web can be exposed. Organizations can rely on managed Chrome update policies to confirm fleet versions.","user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"low"},"cost_usd":0.00067,"input_tokens":4111,"output_tokens":517,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-121045':13A,16A '-2026':12A,15A '157.0.8103.38':25B,69C 'allow':70C 'appear':44B 'attack':29B,73C 'browser':8A,17B,41B,60C 'chrome':1A,18B,21B,63C 'chromium':52B,86C 'combin':35B 'craft':4A,32B,83C 'cve':11A,14A 'descript':47B 'element':10A,43B,80C 'engin':38B,76C 'googl':62C 'html':33B,84C 'let':26B 'leverag':74C 'low':50B,89C 'mac':3A,23B,66C 'maco':19B 'make':40B 'misrepresent':58C 'page':5A,34B,85C 'prior':67C 'rate':48B 'remot':28B,72C 'runtim':20B 'scale':56B 'secur':54B,87C 'sever':55B,88C 'social':37B,75C 'spoof':7A,45B,78C 'ui':9A,42B,57C,79C 'use':30B 'via':81C","nicknames":[],"mitigations":[],"who_affected":"Mac installs of Google Chrome before 157.0.8103.38 are affected. The attack needs a user to visit a crafted page that tricks them, so any Mac user browsing the web can be exposed. Organizations can rely on managed Chrome update policies to confirm fleet versions.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"everyone","plain_action":"Update Google Chrome on your Mac to version 157.0.8103.38 or later.","pkeys":[],"ptokens":[],"labels":["browser","chrome","low","macos","runtime"],"campaign_type":null,"first_public_at":"2026-11-03T21:17:08+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-121045","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121045","severity":null,"published_at":"2026-11-03T21:17:08+00:00","modified_at":"2026-11-03T21:17:08+00:00","first_seen_at":"2026-11-03T21:19:09+00:00","fetched_at":"2026-11-03T21:19:09+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"}