{"id":"CVE-2026-126852","kind":"vulnerability","aliases":["CVE-2026-126852"],"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 feature lets a crafted HTML page trigger a use-after-free. A remote attacker can use it to execute arbitrary code inside the browser sandbox.","severity":"high","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browser","chrome","desktop","laptops","other"],"not_affected_if":["chrome-updated","non-chrome-browser"],"how_to_check":"- Check the Chrome version under Chrome menu > Help > About Google Chrome, or run `google-chrome --version` on Linux\n- Compare the installed version with `157.0.8103.78`; anything older is affected","fix":"- Google Chrome: update to `157.0.8103.78` or later","status":"open","published_at":"2026-11-11T23:17:13+00:00","first_seen_at":"2026-11-11T23:29:36+00:00","triaged_at":"2026-11-11T23:33:38+00:00","updated_at":"2026-11-11T23:33:38+00:00","category":"other","confidence":0.8,"triage":{"at":"2026-11-11T23:33:38Z","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 feature lets a crafted HTML page trigger a use-after-free. A remote attacker can use it to execute arbitrary code inside the browser sandbox.","audience":"everyone","category":"other","nicknames":[],"who_cares":["chrome","browser","desktop","laptops"],"confidence":0.8,"fix_status":"available","needs_auth":"no","worst_case":"Attacker runs code inside the Chrome sandbox via a web page","analyst_note":"","how_to_check":"- Check the Chrome version under Chrome menu > Help > About Google Chrome, or run `google-chrome --version` on Linux\n- Compare the installed version with `157.0.8103.78`; anything older is affected","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":["chrome-updated","non-chrome-browser"],"who_is_affected":"Any device running Google Chrome before 157.0.8103.78 is exposed when a user opens a crafted web page. Servers and users who do not browse with this Chrome build are not affected by this flaw. Other Chromium-based browsers may ship the same code and need their own updates.","user_interaction":"yes","product_ecosystem":"","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000734,"input_tokens":4532,"output_tokens":561,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-126852':16A,19A '-2026':15A,18A '157.0.8103.78':69C 'allow':70C 'arbitrari':53B,76C 'attack':47B,73C 'browser':20B,57B 'bug':28B 'chrome':1A,21B,30B,66C 'chromium':86C 'code':13A,54B,77C 'craft':36B,83C 'cve':14A,17A 'desktop':22B 'execut':52B,75C 'featur':33B 'free':5A,44B,61C 'googl':65C 'handl':27B 'high':89C 'html':37B,84C 'insid':55B,78C 'laptop':23B 'let':8A,34B 'mediastream':7A,32B,63C 'memori':26B 'memory-handl':25B 'page':11A,38B,85C 'prior':67C 'remot':46B,72C 'run':12A 'sandbox':58B,80C 'secur':87C 'sever':88C 'trigger':39B 'use':3A,42B,49B,59C 'use-after-fre':2A,41B 'via':81C 'web':10A","nicknames":[],"mitigations":[],"who_affected":"Any device running Google Chrome before 157.0.8103.78 is exposed when a user opens a crafted web page. Servers and users who do not browse with this Chrome build are not affected by this flaw. Other Chromium-based browsers may ship the same code and need their own updates.","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","desktop","high","laptops","other"],"campaign_type":null,"search_a":"'-126852':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':53B 'attack':47B 'browser':20B,57B 'bug':28B 'chrome':21B,30B 'code':54B 'craft':36B 'desktop':22B 'execut':52B 'featur':33B 'free':44B 'handl':27B 'html':37B 'insid':55B 'laptop':23B 'let':34B 'mediastream':32B 'memori':26B 'memory-handl':25B 'page':38B 'remot':46B 'sandbox':58B 'trigger':39B 'use':42B,49B 'use-after-fre':41B","search_c":"'157.0.8103.78':69C 'allow':70C 'arbitrari':76C 'attack':73C 'chrome':66C 'chromium':86C 'code':77C 'craft':83C 'execut':75C 'free':61C 'googl':65C 'high':89C 'html':84C 'insid':78C 'mediastream':63C 'page':85C 'prior':67C 'remot':72C 'sandbox':80C 'secur':87C 'sever':88C 'use':59C 'via':81C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-11T23:17:13+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-126852","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126852","severity":null,"published_at":"2026-11-11T23:17:13+00:00","modified_at":"2026-11-11T23:17:13+00:00","first_seen_at":"2026-11-11T23:29:36+00:00","fetched_at":"2026-11-11T23:29:36+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"}