{"id":"CVE-2026-119270","kind":"vulnerability","aliases":["CVE-2026-119270"],"related":[],"title":"Chrome: CacheStorage input validation flaw lets crafted page run code","description":"Improper input validation in CacheStorage in Google Chrome prior to 156.0.8078.79 allowed a remote attacker to potentially execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)","summary":"Google Chrome before 156.0.8078.79 mishandles input in CacheStorage, so a crafted HTML page can potentially execute code inside the browser sandbox. Chromium rates it High severity.","severity":"high","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browser","chrome","desktop","mobile","runtime"],"not_affected_if":["up-to-date-chrome"],"how_to_check":"- Open Chrome's version via `chrome://settings/help` and compare it with `156.0.8078.79`","fix":"- Google Chrome: `156.0.8078.79`","status":"open","published_at":"2026-10-30T01:16:45+00:00","first_seen_at":"2026-10-30T01:27:58+00:00","triaged_at":"2026-10-30T01:29:50+00:00","updated_at":"2026-10-30T01:29:50+00:00","category":"runtime","confidence":0.7,"triage":{"at":"2026-10-30T01:29:50Z","model":"claude-haiku-5-5","output":{"fix":"- Google Chrome: `156.0.8078.79`","reach":"internet","title":"Chrome: CacheStorage input validation flaw lets crafted page run code","impact":"medium","summary":"Google Chrome before 156.0.8078.79 mishandles input in CacheStorage, so a crafted HTML page can potentially execute code inside the browser sandbox. Chromium rates it High severity.","audience":"everyone","category":"runtime","nicknames":[],"who_cares":["chrome","browser","desktop","mobile"],"confidence":0.7,"fix_status":"available","needs_auth":"no","worst_case":"Code runs inside the browser sandbox after visiting a crafted page","analyst_note":"","how_to_check":"- Open Chrome's version via `chrome://settings/help` and compare it with `156.0.8078.79`\n- unknown","plain_action":"Update Google Chrome to version 156.0.8078.79 or later.","needs_analyst":false,"not_affected_if":["up-to-date-chrome"],"who_is_affected":"Anyone running Google Chrome older than 156.0.8078.79 who visits a malicious or compromised web page. Exploitation is triggered by a crafted HTML page, so browsing is the exposure path. Users on current Chrome builds are not affected.","user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000653,"input_tokens":4106,"output_tokens":484,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-119270':13A,16A '-2026':12A,15A '156.0.8078.79':25B,58C 'allow':59C 'arbitrari':66C 'attack':62C 'browser':17B,41B 'cachestorag':2A,29B,52C 'chrome':1A,18B,23B,55C 'chromium':43B,76C 'code':10A,38B,67C 'craft':7A,32B,73C 'cve':11A,14A 'desktop':19B 'execut':37B,65C 'flaw':5A 'googl':22B,54C 'high':46B,79C 'html':33B,74C 'improp':48C 'input':3A,27B,49C 'insid':39B,68C 'let':6A 'mishandl':26B 'mobil':20B 'page':8A,34B,75C 'potenti':36B,64C 'prior':56C 'rate':44B 'remot':61C 'run':9A 'runtim':21B 'sandbox':42B,70C 'secur':77C 'sever':47B,78C 'valid':4A,50C 'via':71C","nicknames":[],"mitigations":[],"who_affected":"Anyone running Google Chrome older than 156.0.8078.79 who visits a malicious or compromised web page. Exploitation is triggered by a crafted HTML page, so browsing is the exposure path. Users on current Chrome builds are not affected.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"everyone","plain_action":"Update Google Chrome to version 156.0.8078.79 or later.","first_public_at":"2026-10-30T01:16:45+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-119270","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-119270","severity":null,"published_at":"2026-10-30T01:16:45+00:00","modified_at":"2026-10-30T01:16:46+00:00","first_seen_at":"2026-10-30T01:27:58+00:00","fetched_at":"2026-10-30T01:27:58+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"}