{"id":"CVE-2026-76027","kind":"vulnerability","aliases":["CVE-2026-76027"],"related":[],"title":"Chrome: memory corruption in CacheStorage lets a web page read memory","description":"Memory corruption in CacheStorage in Google Chrome prior to 156.0.8078.79 allowed a remote attacker to read memory via a crafted HTML page. (Chromium security severity: High)","summary":"Google Chrome before 156.0.8078.79 has a memory corruption bug in CacheStorage. A remote attacker can read process memory by serving a crafted HTML page to a victim.","severity":"high","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browser","chrome","desktop","endpoints","runtime"],"not_affected_if":["chrome-version-current"],"how_to_check":"- Open Chrome and check the version under Settings > About Chrome; the version should be `156.0.8078.79` or later.\n- Run `google-chrome --version` on Linux or check the installed Chrome build on managed fleets.","fix":"- Google Chrome: move to `156.0.8078.79` or later.","status":"open","published_at":"2026-10-30T01:16:47+00:00","first_seen_at":"2026-10-30T01:27:59+00:00","triaged_at":"2026-10-30T01:29:44+00:00","updated_at":"2026-10-30T01:29:44+00:00","category":"runtime","confidence":0.7,"triage":{"at":"2026-10-30T01:29:44Z","model":"claude-haiku-5-5","output":{"fix":"- Google Chrome: move to `156.0.8078.79` or later.","reach":"internet","title":"Chrome: memory corruption in CacheStorage lets a web page read memory","impact":"medium","summary":"Google Chrome before 156.0.8078.79 has a memory corruption bug in CacheStorage. A remote attacker can read process memory by serving a crafted HTML page to a victim.","audience":"everyone","category":"runtime","nicknames":[],"who_cares":["chrome","browser","desktop","endpoints"],"confidence":0.7,"fix_status":"available","needs_auth":"no","worst_case":"Attacker reads browser process memory via a crafted web page","analyst_note":"","how_to_check":"- Open Chrome and check the version under Settings > About Chrome; the version should be `156.0.8078.79` or later.\n- Run `google-chrome --version` on Linux or check the installed Chrome build on managed fleets.","plain_action":"Update Google Chrome to version 156.0.8078.79 or later.","needs_analyst":false,"not_affected_if":["chrome-version-current"],"who_is_affected":"Anyone running Google Chrome before 156.0.8078.79 is exposed when they visit a malicious page. Chromium-based browsers that pull the same CacheStorage code may be affected, but the sources only name Chrome. Machines that only use Chrome at a fixed, trusted set of sites face less exposure.","user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000675,"input_tokens":4094,"output_tokens":531,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2026':13A,16A '-76027':14A,17A '156.0.8078.79':26B,59C 'allow':60C 'attack':36B,63C 'browser':18B 'bug':31B 'cachestorag':5A,33B,53C 'chrome':1A,19B,24B,56C 'chromium':72C 'corrupt':3A,30B,51C 'craft':44B,69C 'cve':12A,15A 'desktop':20B 'endpoint':21B 'googl':23B,55C 'high':75C 'html':45B,70C 'let':6A 'memori':2A,11A,29B,40B,50C,66C 'page':9A,46B,71C 'prior':57C 'process':39B 'read':10A,38B,65C 'remot':35B,62C 'runtim':22B 'secur':73C 'serv':42B 'sever':74C 'via':67C 'victim':49B 'web':8A","nicknames":[],"mitigations":[],"who_affected":"Anyone running Google Chrome before 156.0.8078.79 is exposed when they visit a malicious page. Chromium-based browsers that pull the same CacheStorage code may be affected, but the sources only name Chrome. Machines that only use Chrome at a fixed, trusted set of sites face less exposure.","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":"2026-10-30T01:16:47+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-76027","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-76027","severity":null,"published_at":"2026-10-30T01:16:47+00:00","modified_at":"2026-10-30T01:16:47+00:00","first_seen_at":"2026-10-30T01:27:59+00:00","fetched_at":"2026-10-30T01:27:59+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"}