{"id":"CVE-2026-121122","kind":"vulnerability","aliases":["CVE-2026-121122"],"related":[],"title":"Chrome: crafted page can spoof Prompts dialog elements via social engineering","description":"UI misrepresentation in Prompts in Google Chrome 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: Medium)","summary":"Google Chrome versions before 157.0.8103.38 let a remote attacker craft an HTML page that spoofs UI elements in the Prompts dialog. Exploitation relies on social engineering, so a user has to be tricked into visiting the page.","severity":"medium","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browser","chrome","desktop","runtime"],"not_affected_if":["chrome-updated"],"how_to_check":"- Check the installed Chrome version in Chrome's About page or with `google-chrome --version` on Linux.\n- Compare it against the fixed version `157.0.8103.38`.","fix":"- Google Chrome: move to `157.0.8103.38` or later.","status":"open","published_at":"2026-11-03T21:17:20+00:00","first_seen_at":"2026-11-03T21:19:19+00:00","triaged_at":"2026-11-03T21:24:56+00:00","updated_at":"2026-11-03T21:24:56+00:00","category":"runtime","confidence":0.6,"triage":{"at":"2026-11-03T21:24:56Z","model":"claude-haiku-5-5","output":{"fix":"- Google Chrome: move to `157.0.8103.38` or later.","reach":"internet","title":"Chrome: crafted page can spoof Prompts dialog elements via social engineering","impact":"low","summary":"Google Chrome versions before 157.0.8103.38 let a remote attacker craft an HTML page that spoofs UI elements in the Prompts dialog. Exploitation relies on social engineering, so a user has to be tricked into visiting the page.","audience":"everyone","category":"runtime","nicknames":[],"who_cares":["chrome","browser","desktop"],"confidence":0.6,"fix_status":"available","needs_auth":"no","worst_case":"Users are misled by spoofed dialog elements into unsafe actions","analyst_note":"","how_to_check":"- Check the installed Chrome version in Chrome's About page or with `google-chrome --version` on Linux.\n- Compare it against the fixed version `157.0.8103.38`.","plain_action":"Update Google Chrome to version 157.0.8103.38 or later in its settings menu.","needs_analyst":false,"not_affected_if":["chrome-updated"],"who_is_affected":"Any device running Google Chrome before 157.0.8103.38 is potentially exposed, since the flaw is in the browser's own Prompts UI. Exploitation needs a user to open a crafted HTML page, so managed fleets with auto-update enabled are mostly covered once updated.","user_interaction":"yes","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000678,"input_tokens":4109,"output_tokens":534,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-121122':14A,17A '-2026':13A,16A '157.0.8103.38':26B,68C 'allow':69C 'attack':30B,72C 'browser':18B 'chrome':1A,19B,23B,65C 'chromium':85C 'craft':2A,31B,82C 'cve':12A,15A 'desktop':20B 'dialog':7A,42B 'element':8A,38B,79C 'engin':11A,47B,75C 'exploit':43B 'googl':22B,64C 'html':33B,83C 'let':27B 'leverag':73C 'medium':88C 'misrepresent':60C 'page':3A,34B,58B,84C 'prior':66C 'prompt':6A,41B,62C 'reli':44B 'remot':29B,71C 'runtim':21B 'secur':86C 'sever':87C 'social':10A,46B,74C 'spoof':5A,36B,77C 'trick':54B 'ui':37B,59C,78C 'user':50B 'version':24B 'via':9A,80C 'visit':56B","nicknames":[],"mitigations":[],"who_affected":"Any device running Google Chrome before 157.0.8103.38 is potentially exposed, since the flaw is in the browser's own Prompts UI. Exploitation needs a user to open a crafted HTML page, so managed fleets with auto-update enabled are mostly covered once updated.","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 in its settings menu.","pkeys":[],"ptokens":[],"labels":["browser","chrome","desktop","medium","runtime"],"campaign_type":null,"first_public_at":"2026-11-03T21:17:20+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-121122","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121122","severity":null,"published_at":"2026-11-03T21:17:20+00:00","modified_at":"2026-11-03T21:17:20+00:00","first_seen_at":"2026-11-03T21:19:19+00:00","fetched_at":"2026-11-03T21:19:19+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"}