{"id":"CVE-2026-126877","kind":"vulnerability","aliases":["CVE-2026-126877"],"related":[],"title":"Chrome: Dawn use-after-free lets a compromised renderer escape the sandbox","description":"Use after free in Dawn in Google Chrome prior to 157.0.8103.78 allowed a remote attacker who had compromised the renderer process to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)","summary":"A use-after-free bug in Dawn, Chrome's WebGPU graphics component, lets an attacker who has already compromised the renderer process run code outside the browser sandbox. The attack is triggered by a crafted HTML page, and Chromium rates it High severity.","severity":"high","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browsers","chrome","desktop","endpoints","other"],"not_affected_if":["chrome-at-or-above-157.0.8103.78","no-chrome-installed"],"how_to_check":"- Check the installed Chrome version (`chrome://settings/help` in the browser) and compare it with `157.0.8103.78`.\n- Confirm whether Chrome updates are applied automatically on the managed devices.","fix":"- Google Chrome: move to `157.0.8103.78` or later.","status":"open","published_at":"2026-11-11T23:17:16+00:00","first_seen_at":"2026-11-11T23:29:38+00:00","triaged_at":"2026-11-11T23:32:14+00:00","updated_at":"2026-11-11T23:32:14+00:00","category":"other","confidence":0.8,"triage":{"at":"2026-11-11T23:32:14Z","model":"claude-haiku-5-5","output":{"fix":"- Google Chrome: move to `157.0.8103.78` or later.","reach":"internet","title":"Chrome: Dawn use-after-free lets a compromised renderer escape the sandbox","impact":"high","summary":"A use-after-free bug in Dawn, Chrome's WebGPU graphics component, lets an attacker who has already compromised the renderer process run code outside the browser sandbox. The attack is triggered by a crafted HTML page, and Chromium rates it High severity.","audience":"everyone","category":"other","nicknames":[],"who_cares":["chrome","browsers","desktop","endpoints"],"confidence":0.8,"fix_status":"available","needs_auth":"no","worst_case":"Attacker runs arbitrary code outside the browser sandbox on the device.","analyst_note":"","how_to_check":"- Check the installed Chrome version (`chrome://settings/help` in the browser) and compare it with `157.0.8103.78`.\n- Confirm whether Chrome updates are applied automatically on the managed devices.","plain_action":"Update Google Chrome to version 157.0.8103.78 or later, then restart the browser.","product_name":"","needs_analyst":false,"not_affected_if":["chrome-at-or-above-157.0.8103.78","no-chrome-installed"],"who_is_affected":"Anyone running Google Chrome older than 157.0.8103.78 is exposed, and a visit to a malicious page is the entry point. The attacker must first compromise the renderer process, so this is a second-stage flaw rather than a standalone one-click takeover. Machines already on the fixed version or using a browser that does not ship this Dawn code are not affected.","user_interaction":"yes","product_ecosystem":"","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000756,"input_tokens":4538,"output_tokens":604,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-126877':16A,19A '-2026':15A,18A '157.0.8103.78':78C 'allow':79C 'alreadi':42B 'arbitrari':91C 'attack':39B,54B,82C 'browser':20B,51B 'bug':29B 'chrome':1A,21B,32B,75C 'chromium':63B,101C 'code':48B,92C 'compon':36B 'compromis':9A,43B,85C 'craft':59B,98C 'cve':14A,17A 'dawn':2A,31B,72C 'desktop':22B 'endpoint':23B 'escap':11A 'execut':90C 'free':6A,28B,70C 'googl':74C 'graphic':35B 'high':66B,104C 'html':60B,99C 'let':7A,37B 'outsid':49B,93C 'page':61B,100C 'prior':76C 'process':46B,88C 'rate':64B 'remot':81C 'render':10A,45B,87C 'run':47B 'sandbox':13A,52B,95C 'secur':102C 'sever':67B,103C 'trigger':56B 'use':4A,26B,68C 'use-after-fre':3A,25B 'via':96C 'webgpu':34B","nicknames":[],"mitigations":[],"who_affected":"Anyone running Google Chrome older than 157.0.8103.78 is exposed, and a visit to a malicious page is the entry point. The attacker must first compromise the renderer process, so this is a second-stage flaw rather than a standalone one-click takeover. Machines already on the fixed version or using a browser that does not ship this Dawn code 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, then restart the browser.","pkeys":[],"ptokens":[],"labels":["browsers","chrome","desktop","endpoints","high","other"],"campaign_type":null,"search_a":"'-126877':16A,19A '-2026':15A,18A 'chrome':1A 'compromis':9A 'cve':14A,17A 'dawn':2A 'escap':11A 'free':6A 'let':7A 'render':10A 'sandbox':13A 'use':4A 'use-after-fre':3A","search_b":"'alreadi':42B 'attack':39B,54B 'browser':20B,51B 'bug':29B 'chrome':21B,32B 'chromium':63B 'code':48B 'compon':36B 'compromis':43B 'craft':59B 'dawn':31B 'desktop':22B 'endpoint':23B 'free':28B 'graphic':35B 'high':66B 'html':60B 'let':37B 'outsid':49B 'page':61B 'process':46B 'rate':64B 'render':45B 'run':47B 'sandbox':52B 'sever':67B 'trigger':56B 'use':26B 'use-after-fre':25B 'webgpu':34B","search_c":"'157.0.8103.78':78C 'allow':79C 'arbitrari':91C 'attack':82C 'chrome':75C 'chromium':101C 'code':92C 'compromis':85C 'craft':98C 'dawn':72C 'execut':90C 'free':70C 'googl':74C 'high':104C 'html':99C 'outsid':93C 'page':100C 'prior':76C 'process':88C 'remot':81C 'render':87C 'sandbox':95C 'secur':102C 'sever':103C 'use':68C 'via':96C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-11T23:17:16+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-126877","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126877","severity":null,"published_at":"2026-11-11T23:17:16+00:00","modified_at":"2026-11-11T23:17:16+00:00","first_seen_at":"2026-11-11T23:29:38+00:00","fetched_at":"2026-11-11T23:29:38+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"}