{"id":"CVE-2026-121084","kind":"vulnerability","aliases":["CVE-2026-121084"],"related":[],"title":"Chrome: Skia out-of-bounds read lets a compromised renderer escape sandbox","description":"Out of bounds read in Skia in Google Chrome prior to 157.0.8103.38 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 flaw in Skia, Chrome's graphics library, lets a remote attacker who already controls the renderer process run code outside the browser sandbox via a crafted HTML page. Chromium rates it High severity.","severity":"high","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browsers","chrome","endpoints","other"],"not_affected_if":["chrome-155-or-later-patched","no-browsing-of-untrusted-sites"],"how_to_check":"- Open Chrome and check the version under Settings > About Chrome, or run `google-chrome --version` on a managed machine.\n- Compare against the fixed version `157.0.8103.38`.","fix":"- Google Chrome: move to `157.0.8103.38` or later.","status":"open","published_at":"2026-11-03T21:17:13+00:00","first_seen_at":"2026-11-03T21:19:12+00:00","triaged_at":"2026-11-03T21:26:44+00:00","updated_at":"2026-11-03T21:26:44+00:00","category":"other","confidence":0.7,"triage":{"at":"2026-11-03T21:26:44Z","model":"claude-haiku-5-5","output":{"fix":"- Google Chrome: move to `157.0.8103.38` or later.","reach":"internet","title":"Chrome: Skia out-of-bounds read lets a compromised renderer escape sandbox","impact":"high","summary":"A flaw in Skia, Chrome's graphics library, lets a remote attacker who already controls the renderer process run code outside the browser sandbox via a crafted HTML page. Chromium rates it High severity.","audience":"everyone","category":"other","nicknames":[],"who_cares":["chrome","browsers","endpoints"],"confidence":0.7,"fix_status":"available","needs_auth":"no","worst_case":"Attacker runs code outside the browser sandbox on the user's machine","analyst_note":"","how_to_check":"- Open Chrome and check the version under Settings > About Chrome, or run `google-chrome --version` on a managed machine.\n- Compare against the fixed version `157.0.8103.38`.","plain_action":"Update Google Chrome to version 157.0.8103.38 or later: Settings > About Chrome.","needs_analyst":false,"not_affected_if":["chrome-155-or-later-patched","no-browsing-of-untrusted-sites"],"who_is_affected":"Anyone running Google Chrome before 157.0.8103.38 who browses untrusted web pages. The attack chains a renderer compromise with this flaw, so exposure depends on browsing untrusted content; managed fleets should confirm the version across endpoints.","user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000683,"input_tokens":4114,"output_tokens":544,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-121084':16A,19A '-2026':15A,18A '157.0.8103.38':68C 'allow':69C 'alreadi':36B 'arbitrari':81C 'attack':34B,72C 'bound':6A,59C 'browser':20B,45B 'chrome':1A,21B,27B,65C 'chromium':52B,91C 'code':42B,82C 'compromis':10A,75C 'control':37B 'craft':49B,88C 'cve':14A,17A 'endpoint':22B 'escap':12A 'execut':80C 'flaw':24B 'googl':64C 'graphic':29B 'high':55B,94C 'html':50B,89C 'let':8A,31B 'librari':30B 'out-of-bound':3A 'outsid':43B,83C 'page':51B,90C 'prior':66C 'process':40B,78C 'rate':53B 'read':7A,60C 'remot':33B,71C 'render':11A,39B,77C 'run':41B 'sandbox':13A,46B,85C 'secur':92C 'sever':56B,93C 'skia':2A,26B,62C 'via':47B,86C","nicknames":[],"mitigations":[],"who_affected":"Anyone running Google Chrome before 157.0.8103.38 who browses untrusted web pages. The attack chains a renderer compromise with this flaw, so exposure depends on browsing untrusted content; managed fleets should confirm the version 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: Settings > About Chrome.","pkeys":[],"ptokens":[],"labels":["browsers","chrome","endpoints","high","other"],"campaign_type":null,"first_public_at":"2026-11-03T21:17:13+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-121084","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121084","severity":null,"published_at":"2026-11-03T21:17:13+00:00","modified_at":"2026-11-03T21:17:13+00:00","first_seen_at":"2026-11-03T21:19:12+00:00","fetched_at":"2026-11-03T21:19:12+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"}