{"id":"CVE-2026-121173","kind":"vulnerability","aliases":["CVE-2026-121173"],"related":[],"title":"Chrome: WebGL uninitialized memory lets a crafted web page read memory","description":"Uninitialized resource in WebGL in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to read memory outside the sandbox via a crafted HTML page. (Chromium security severity: High)","summary":"Google Chrome's WebGL code uses a resource before it is initialized, so a crafted HTML page can read memory outside the browser sandbox. Chromium rates it High severity.","severity":"high","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browsers","chrome","endpoints","package","webgl"],"not_affected_if":["chrome-updated"],"how_to_check":"- Open the Chrome menu, go to Help, then About Google Chrome, and read the version number\n- Compare it with `157.0.8103.38`; anything lower is affected","fix":"- Google Chrome: move to `157.0.8103.38` or later","status":"open","published_at":"2026-11-03T21:17:25+00:00","first_seen_at":"2026-11-03T21:19:24+00:00","triaged_at":"2026-11-03T21:23:15+00:00","updated_at":"2026-11-03T21:23:15+00:00","category":"package","confidence":0.8,"triage":{"at":"2026-11-03T21:23:15Z","model":"claude-haiku-5-5","output":{"fix":"- Google Chrome: move to `157.0.8103.38` or later","reach":"internet","title":"Chrome: WebGL uninitialized memory lets a crafted web page read memory","impact":"medium","summary":"Google Chrome's WebGL code uses a resource before it is initialized, so a crafted HTML page can read memory outside the browser sandbox. Chromium rates it High severity.","audience":"everyone","category":"package","nicknames":[],"who_cares":["chrome","webgl","browsers","endpoints"],"confidence":0.8,"fix_status":"available","needs_auth":"no","worst_case":"Attacker reads memory outside the browser sandbox via a crafted page","analyst_note":"","how_to_check":"- Open the Chrome menu, go to Help, then About Google Chrome, and read the version number\n- Compare it with `157.0.8103.38`; anything lower is affected","plain_action":"Update Google Chrome to version 157.0.8103.38 or later from its About Chrome page.","needs_analyst":false,"not_affected_if":["chrome-updated"],"who_is_affected":"Anyone running Google Chrome before 157.0.8103.38 who visits untrusted web pages is exposed, since the attack works through a crafted HTML page. Managed fleets should check browser versions across endpoints.","user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000655,"input_tokens":4101,"output_tokens":490,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-121173':14A,17A '-2026':13A,16A '157.0.8103.38':61C 'allow':62C 'attack':65C 'browser':18B,45B 'chrome':1A,19B,24B,58C 'chromium':47B,77C 'code':27B 'craft':7A,37B,74C 'cve':12A,15A 'endpoint':20B 'googl':23B,57C 'high':50B,80C 'html':38B,75C 'initi':34B 'let':5A 'memori':4A,11A,42B,68C 'outsid':43B,69C 'packag':21B 'page':9A,39B,76C 'prior':59C 'rate':48B 'read':10A,41B,67C 'remot':64C 'resourc':30B,53C 'sandbox':46B,71C 'secur':78C 'sever':51B,79C 'uniniti':3A,52C 'use':28B 'via':72C 'web':8A 'webgl':2A,22B,26B,55C","nicknames":[],"mitigations":[],"who_affected":"Anyone running Google Chrome before 157.0.8103.38 who visits untrusted web pages is exposed, since the attack works through a crafted HTML page. Managed fleets should check browser versions across endpoints.","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 from its About Chrome page.","pkeys":[],"ptokens":[],"labels":["browsers","chrome","endpoints","high","package","webgl"],"campaign_type":null,"first_public_at":"2026-11-03T21:17:25+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-121173","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121173","severity":null,"published_at":"2026-11-03T21:17:25+00:00","modified_at":"2026-11-03T21:17:25+00:00","first_seen_at":"2026-11-03T21:19:24+00:00","fetched_at":"2026-11-03T21:19:24+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"}