{"id":"CVE-2026-126892","kind":"vulnerability","aliases":["CVE-2026-126892"],"related":[],"title":"Chrome: use-after-free in MediaStream lets a web page run code","description":"Use after free in MediaStream in Google Chrome prior to 157.0.8103.78 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)","summary":"A memory-handling bug in Chrome's MediaStream component lets a crafted HTML page trigger a use-after-free. A remote attacker can run arbitrary code inside the browser sandbox when a user visits the page.","severity":"high","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browser","chrome","linux","macos","runtime","windows"],"not_affected_if":["up-to-date-chrome"],"how_to_check":"- Check the installed Chrome version via Chrome's About page or `google-chrome --version` on Linux.\n- Confirm the version is below `157.0.8103.78`.","fix":"- Google Chrome: update to `157.0.8103.78` or later.","status":"open","published_at":"2026-11-11T23:17:18+00:00","first_seen_at":"2026-11-11T23:29:39+00:00","triaged_at":"2026-11-11T23:31:58+00:00","updated_at":"2026-11-11T23:31:58+00:00","category":"runtime","confidence":0.8,"triage":{"at":"2026-11-11T23:31:58Z","model":"claude-haiku-5-5","output":{"fix":"- Google Chrome: update to `157.0.8103.78` or later.","reach":"internet","title":"Chrome: use-after-free in MediaStream lets a web page run code","impact":"high","summary":"A memory-handling bug in Chrome's MediaStream component lets a crafted HTML page trigger a use-after-free. A remote attacker can run arbitrary code inside the browser sandbox when a user visits the page.","audience":"everyone","category":"runtime","nicknames":[],"who_cares":["chrome","browser","windows","macos","linux"],"confidence":0.8,"fix_status":"available","needs_auth":"no","worst_case":"Arbitrary code runs inside the Chrome sandbox after visiting a page.","analyst_note":"","how_to_check":"- Check the installed Chrome version via Chrome's About page or `google-chrome --version` on Linux.\n- Confirm the version is below `157.0.8103.78`.","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":["up-to-date-chrome"],"who_is_affected":"Any user running Google Chrome before 157.0.8103.78 who opens a malicious or compromised web page is exposed. Managed fleets and kiosks running Chrome should be checked too. Users on current Chrome builds are not affected.","user_interaction":"yes","product_ecosystem":"","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000715,"input_tokens":4532,"output_tokens":523,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-126892':16A,19A '-2026':15A,18A '157.0.8103.78':74C 'allow':75C 'arbitrari':52B,81C 'attack':49B,78C 'browser':20B,56B 'bug':30B 'chrome':1A,21B,32B,71C 'chromium':91C 'code':13A,53B,82C 'compon':35B 'craft':38B,88C 'cve':14A,17A 'execut':80C 'free':5A,46B,66C 'googl':70C 'handl':29B 'high':94C 'html':39B,89C 'insid':54B,83C 'let':8A,36B 'linux':22B 'maco':23B 'mediastream':7A,34B,68C 'memori':28B 'memory-handl':27B 'page':11A,40B,63B,90C 'prior':72C 'remot':48B,77C 'run':12A,51B 'runtim':24B 'sandbox':57B,85C 'secur':92C 'sever':93C 'trigger':41B 'use':3A,44B,64C 'use-after-fre':2A,43B 'user':60B 'via':86C 'visit':61B 'web':10A 'window':25B","nicknames":[],"mitigations":[],"who_affected":"Any user running Google Chrome before 157.0.8103.78 who opens a malicious or compromised web page is exposed. Managed fleets and kiosks running Chrome should be checked too. Users on current Chrome builds are not affected.","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","high","linux","macos","runtime","windows"],"campaign_type":null,"search_a":"'-126892':16A,19A '-2026':15A,18A 'chrome':1A 'code':13A 'cve':14A,17A 'free':5A 'let':8A 'mediastream':7A 'page':11A 'run':12A 'use':3A 'use-after-fre':2A 'web':10A","search_b":"'arbitrari':52B 'attack':49B 'browser':20B,56B 'bug':30B 'chrome':21B,32B 'code':53B 'compon':35B 'craft':38B 'free':46B 'handl':29B 'html':39B 'insid':54B 'let':36B 'linux':22B 'maco':23B 'mediastream':34B 'memori':28B 'memory-handl':27B 'page':40B,63B 'remot':48B 'run':51B 'runtim':24B 'sandbox':57B 'trigger':41B 'use':44B 'use-after-fre':43B 'user':60B 'visit':61B 'window':25B","search_c":"'157.0.8103.78':74C 'allow':75C 'arbitrari':81C 'attack':78C 'chrome':71C 'chromium':91C 'code':82C 'craft':88C 'execut':80C 'free':66C 'googl':70C 'high':94C 'html':89C 'insid':83C 'mediastream':68C 'page':90C 'prior':72C 'remot':77C 'sandbox':85C 'secur':92C 'sever':93C 'use':64C 'via':86C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-11T23:17:18+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-126892","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126892","severity":null,"published_at":"2026-11-11T23:17:18+00:00","modified_at":"2026-11-11T23:17:18+00:00","first_seen_at":"2026-11-11T23:29:39+00:00","fetched_at":"2026-11-11T23:29:39+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"}