{"id":"CVE-2026-113329","kind":"vulnerability","aliases":["CVE-2026-113329"],"related":[],"title":"Chrome on Mac: installer out-of-bounds read leaks sandbox memory","description":"Out of bounds read in Installer in Google Chrome on on Mac prior to 156.0.8078.47 allowed a remote attacker to potentially read memory inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)","summary":"A out-of-bounds read in the Installer component of Google Chrome on macOS lets a remote attacker read memory inside the sandbox when the victim opens a crafted HTML page. The sources say the flaw is in the browser, rated Chromium security severity Medium, with a CVSS score of 6.5.","severity":"medium","cvss":6.5,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"google chrome","fixed":["156.0.8078.47"],"affected":"< 156.0.8078.47","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["browser","chrome","desktop","macos","vendor"],"not_affected_if":["chrome-updated"],"how_to_check":"- Run `chrome --version` or check Chrome's About page and compare against `156.0.8078.47`\n- unknown","fix":"- Update Google Chrome on macOS to `156.0.8078.47` or later\n- unknown","status":"open","published_at":"2026-10-20T22:19:27+00:00","first_seen_at":"2026-10-23T21:57:24+00:00","triaged_at":"2026-10-25T03:51:45+00:00","updated_at":"2026-10-25T03:51:45+00:00","category":"vendor","confidence":0.6,"triage":{"at":"2026-10-25T03:51:45Z","model":"claude-haiku-5-5","output":{"fix":"- Update Google Chrome on macOS to `156.0.8078.47` or later\n- unknown","reach":"internet","title":"Chrome on Mac: installer out-of-bounds read leaks sandbox memory","impact":"low","summary":"A out-of-bounds read in the Installer component of Google Chrome on macOS lets a remote attacker read memory inside the sandbox when the victim opens a crafted HTML page. The sources say the flaw is in the browser, rated Chromium security severity Medium, with a CVSS score of 6.5.","category":"vendor","nicknames":[],"who_cares":["chrome","macos","browser","desktop"],"confidence":0.6,"needs_auth":"no","worst_case":"Attacker reads sandboxed browser memory after a victim visits a page","analyst_note":"","how_to_check":"- Run `chrome --version` or check Chrome's About page and compare against `156.0.8078.47`\n- unknown","needs_analyst":false,"not_affected_if":["chrome-updated"],"who_is_affected":"Any Mac running Google Chrome before `156.0.8078.47` is affected, since the flaw is triggered by a visited web page. Managed fleets that pin older Chrome builds are the ones most likely to stay exposed. unknown whether the sources describe any configuration that changes exposure.","user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"medium"},"cost_usd":0.000581,"input_tokens":3341,"output_tokens":494,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-113329':15A,18A '-2026':14A,17A '156.0.8078.47':92C '6.5':77B 'allow':93C 'attack':44B,96C 'bound':8A,30B,80C 'browser':21B,66B 'chrome':1A,20A,22B,38B,86C 'chromium':68B,109C 'compon':35B 'craft':55B,106C 'cve':13A,16A 'cvss':74B 'desktop':23B 'flaw':62B 'googl':37B,85C 'google':19A 'html':56B,107C 'insid':47B,101C 'instal':4A,34B,83C 'leak':10A 'let':41B 'mac':3A,89C 'maco':24B,40B 'medium':71B,112C 'memori':12A,46B,100C 'open':53B 'out-of-bound':5A,27B 'page':57B,108C 'potenti':98C 'prior':90C 'rate':67B 'read':9A,31B,45B,81C,99C 'remot':43B,95C 'sandbox':11A,49B,103C 'say':60B 'score':75B 'secur':69B,110C 'sever':70B,111C 'sourc':59B 'vendor':25B 'via':104C 'victim':52B","nicknames":[],"mitigations":[],"who_affected":"Any Mac running Google Chrome before `156.0.8078.47` is affected, since the flaw is triggered by a visited web page. Managed fleets that pin older Chrome builds are the ones most likely to stay exposed. unknown whether the sources describe any configuration that changes exposure.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:19:27+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","cvss_by":"134c704f-9b21-4f2e-91b3-4a467353bcc0","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-113329","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-113329","severity":null,"published_at":"2026-10-20T22:19:27+00:00","modified_at":"2026-10-22T12:00:05+00:00","first_seen_at":"2026-10-23T21:57:24+00:00","fetched_at":"2026-10-23T22:29:00+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"}