{"id":"CVE-2026-121185","kind":"vulnerability","aliases":["CVE-2026-121185"],"related":[],"title":"Chrome: use-after-free in Picture-in-Picture lets crafted web page run code","description":"Use after free in PictureInPicture in Google Chrome prior to 157.0.8103.38 allowed a remote attacker leveraging social engineering to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)","summary":"Google Chrome versions before 157.0.8103.38 have a use-after-free bug in the Picture-in-Picture feature. A remote attacker who tricks a user into opening a crafted HTML page can execute arbitrary code outside the browser sandbox.","severity":"high","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browser","chrome","desktop","endpoints","runtime"],"not_affected_if":["chrome-updated"],"how_to_check":"- Open Chrome and check the version under Chrome menu > Help > About Google Chrome, or run `chrome --version` on the machine\n- Compare the installed version against `157.0.8103.38`","fix":"- Google Chrome: move to `157.0.8103.38` or later","status":"open","published_at":"2026-11-03T21:17:27+00:00","first_seen_at":"2026-11-03T21:19:25+00:00","triaged_at":"2026-11-03T21:23:04+00:00","updated_at":"2026-11-03T21:23:04+00:00","category":"runtime","confidence":0.8,"triage":{"at":"2026-11-03T21:23:04Z","model":"claude-haiku-5-5","output":{"fix":"- Google Chrome: move to `157.0.8103.38` or later","reach":"internet","title":"Chrome: use-after-free in Picture-in-Picture lets crafted web page run code","impact":"high","summary":"Google Chrome versions before 157.0.8103.38 have a use-after-free bug in the Picture-in-Picture feature. A remote attacker who tricks a user into opening a crafted HTML page can execute arbitrary code outside the browser sandbox.","audience":"everyone","category":"runtime","nicknames":[],"who_cares":["chrome","browser","desktop","endpoints"],"confidence":0.8,"fix_status":"available","needs_auth":"no","worst_case":"Attacker runs arbitrary code outside the browser sandbox on the user's machine.","analyst_note":"","how_to_check":"- Open Chrome and check the version under Chrome menu > Help > About Google Chrome, or run `chrome --version` on the machine\n- Compare the installed version against `157.0.8103.38`","plain_action":"Update Google Chrome to version 157.0.8103.38 or later: Chrome menu > Help > About Google Chrome.","needs_analyst":false,"not_affected_if":["chrome-updated"],"who_is_affected":"Any device running Google Chrome older than 157.0.8103.38 is exposed when a user visits a malicious page. Browsers on managed fleets should be checked centrally. Users who do not run that Chrome build can skip it.","user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000683,"input_tokens":4112,"output_tokens":543,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-121185':19A,22A '-2026':18A,21A '157.0.8103.38':32B,78C 'allow':79C 'arbitrari':62B,88C 'attack':49B,82C 'browser':23B,66B 'bug':39B 'chrome':1A,24B,29B,75C 'chromium':98C 'code':16A,63B,89C 'craft':12A,57B,95C 'cve':17A,20A 'desktop':25B 'endpoint':26B 'engin':85C 'execut':61B,87C 'featur':46B 'free':5A,38B,70C 'googl':28B,74C 'high':101C 'html':58B,96C 'let':11A 'leverag':83C 'open':55B 'outsid':64B,90C 'page':14A,59B,97C 'pictur':8A,10A,43B,45B 'picture-in-pictur':7A,42B 'pictureinpictur':72C 'prior':76C 'remot':48B,81C 'run':15A 'runtim':27B 'sandbox':67B,92C 'secur':99C 'sever':100C 'social':84C 'trick':51B 'use':3A,36B,68C 'use-after-fre':2A,35B 'user':53B 'version':30B 'via':93C 'web':13A","nicknames":[],"mitigations":[],"who_affected":"Any device running Google Chrome older than 157.0.8103.38 is exposed when a user visits a malicious page. Browsers on managed fleets should be checked centrally. Users who do not run that Chrome build can skip it.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"everyone","plain_action":"Update Google Chrome to version 157.0.8103.38 or later: Chrome menu > Help > About Google Chrome.","pkeys":[],"ptokens":[],"labels":["browser","chrome","desktop","endpoints","high","runtime"],"campaign_type":null,"first_public_at":"2026-11-03T21:17:27+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-121185","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121185","severity":null,"published_at":"2026-11-03T21:17:27+00:00","modified_at":"2026-11-03T21:17:27+00:00","first_seen_at":"2026-11-03T21:19:25+00:00","fetched_at":"2026-11-03T21:19:25+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"}