{"id":"CVE-2026-126913","kind":"vulnerability","aliases":["CVE-2026-126913"],"related":[],"title":"Chrome: out-of-bounds read in Compositing lets attacker read memory","description":"Out of bounds read in Compositing in Google Chrome prior to 157.0.8103.78 allowed a remote attacker who had compromised the renderer process to read memory outside the sandbox via a crafted HTML page. (Chromium security severity: High)","summary":"Google Chrome before 157.0.8103.78 has an out-of-bounds read in its Compositing component. A remote attacker who already controls the renderer process can read memory outside the sandbox using a crafted HTML page.","severity":"high","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browser","chrome","desktop","runtime"],"not_affected_if":["already-updated"],"how_to_check":"- Open Chrome and check the version under Settings > About Chrome, or run `google-chrome --version` on Linux.\n- Compare the installed version against `157.0.8103.78`.","fix":"- Google Chrome: move to `157.0.8103.78` or later.","status":"open","published_at":"2026-11-11T23:17:21+00:00","first_seen_at":"2026-11-11T23:29:40+00:00","triaged_at":"2026-11-11T23:31:34+00:00","updated_at":"2026-11-11T23:31:34+00:00","category":"runtime","confidence":0.6,"triage":{"at":"2026-11-11T23:31:34Z","model":"claude-haiku-5-5","output":{"fix":"- Google Chrome: move to `157.0.8103.78` or later.","reach":"internet","title":"Chrome: out-of-bounds read in Compositing lets attacker read memory","impact":"medium","summary":"Google Chrome before 157.0.8103.78 has an out-of-bounds read in its Compositing component. A remote attacker who already controls the renderer process can read memory outside the sandbox using a crafted HTML page.","audience":"everyone","category":"runtime","nicknames":[],"who_cares":["chrome","desktop","browser"],"confidence":0.6,"fix_status":"available","needs_auth":"no","worst_case":"attacker reads memory outside the browser sandbox","analyst_note":"","how_to_check":"- Open Chrome and check the version under Settings > About Chrome, or run `google-chrome --version` on Linux.\n- Compare the installed version against `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":["already-updated"],"who_is_affected":"Anyone running Google Chrome before 157.0.8103.78 on desktop systems. The attacker must first compromise the renderer process, typically by delivering a crafted HTML page, so the exposure is through normal web browsing.","user_interaction":"yes","product_ecosystem":"","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000715,"input_tokens":4535,"output_tokens":523,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-126913':15A,18A '-2026':14A,17A '157.0.8103.78':26B,69C 'allow':70C 'alreadi':42B 'attack':10A,40B,73C 'bound':5A,32B,60C 'browser':19B 'chrome':1A,20B,24B,66C 'chromium':91C 'compon':37B 'composit':8A,36B,63C 'compromis':76C 'control':43B 'craft':55B,88C 'cve':13A,16A 'desktop':21B 'googl':23B,65C 'high':94C 'html':56B,89C 'let':9A 'memori':12A,49B,82C 'out-of-bound':2A,29B 'outsid':50B,83C 'page':57B,90C 'prior':67C 'process':46B,79C 'read':6A,11A,33B,48B,61C,81C 'remot':39B,72C 'render':45B,78C 'runtim':22B 'sandbox':52B,85C 'secur':92C 'sever':93C 'use':53B 'via':86C","nicknames":[],"mitigations":[],"who_affected":"Anyone running Google Chrome before 157.0.8103.78 on desktop systems. The attacker must first compromise the renderer process, typically by delivering a crafted HTML page, so the exposure is through normal web browsing.","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","runtime"],"campaign_type":null,"search_a":"'-126913':15A,18A '-2026':14A,17A 'attack':10A 'bound':5A 'chrome':1A 'composit':8A 'cve':13A,16A 'let':9A 'memori':12A 'out-of-bound':2A 'read':6A,11A","search_b":"'157.0.8103.78':26B 'alreadi':42B 'attack':40B 'bound':32B 'browser':19B 'chrome':20B,24B 'compon':37B 'composit':36B 'control':43B 'craft':55B 'desktop':21B 'googl':23B 'html':56B 'memori':49B 'out-of-bound':29B 'outsid':50B 'page':57B 'process':46B 'read':33B,48B 'remot':39B 'render':45B 'runtim':22B 'sandbox':52B 'use':53B","search_c":"'157.0.8103.78':69C 'allow':70C 'attack':73C 'bound':60C 'chrome':66C 'chromium':91C 'composit':63C 'compromis':76C 'craft':88C 'googl':65C 'high':94C 'html':89C 'memori':82C 'outsid':83C 'page':90C 'prior':67C 'process':79C 'read':61C,81C 'remot':72C 'render':78C 'sandbox':85C 'secur':92C 'sever':93C 'via':86C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-11T23:17:21+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-126913","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126913","severity":null,"published_at":"2026-11-11T23:17:21+00:00","modified_at":"2026-11-11T23:17:21+00:00","first_seen_at":"2026-11-11T23:29:40+00:00","fetched_at":"2026-11-11T23:29:40+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"}