{"id":"CVE-2026-113289","kind":"vulnerability","aliases":["CVE-2026-113289"],"related":[],"title":"Chrome: crafted HTML page can run code inside the browser sandbox","description":"Improper input validation in PerformanceAPIs in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)","summary":"Google Chrome before 156.0.8078.47 mishandles input in its PerformanceAPIs, so a remote attacker can craft an HTML page that executes code inside the renderer sandbox. The attacker needs the victim to load that page; the sandbox limits how far the code can go.","severity":"high","cvss":8.8,"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":["browsers","chrome","linux","macos","runtime","windows"],"not_affected_if":["already-on-156.0.8078.47-or-later"],"how_to_check":"Run chrome://version in Chrome and compare the version with 156.0.8078.47.\nOn managed fleets, check the installed Chrome version with your device management tool.","fix":"Update Google Chrome to 156.0.8078.47 or later and restart the browser.","status":"open","published_at":"2026-10-20T22:19:22+00:00","first_seen_at":"2026-10-23T21:57:24+00:00","triaged_at":"2026-10-23T22:35:21+00:00","updated_at":"2026-10-23T22:35:21+00:00","category":"runtime","confidence":0.7,"triage":{"at":"2026-10-23T22:35:21Z","model":"claude-haiku-5-5","output":{"fix":"Update Google Chrome to 156.0.8078.47 or later and restart the browser.\nunknown","reach":"internet","title":"Chrome: crafted HTML page can run code inside the browser sandbox","impact":"high","summary":"Google Chrome before 156.0.8078.47 mishandles input in its PerformanceAPIs, so a remote attacker can craft an HTML page that executes code inside the renderer sandbox. The attacker needs the victim to load that page; the sandbox limits how far the code can go.","category":"runtime","who_cares":["chrome","windows","macos","linux","browsers"],"confidence":0.7,"needs_auth":"no","worst_case":"Attacker code runs inside the browser sandbox on the visitor's machine.","analyst_note":"","how_to_check":"Run chrome://version in Chrome and compare the version with 156.0.8078.47.\nOn managed fleets, check the installed Chrome version with your device management tool.\nunknown","needs_analyst":false,"not_affected_if":["already-on-156.0.8078.47-or-later"],"user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000499,"input_tokens":2958,"output_tokens":407,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-113289':14A,17A '-2026':13A,16A '156.0.8078.47':29B,79C 'allow':80C 'arbitrari':87C 'attack':38B,52B,83C 'browser':10A,20B 'chrome':1A,19A,21B,27B,76C 'chromium':97C 'code':7A,46B,66B,88C 'craft':2A,40B,94C 'cve':12A,15A 'execut':45B,86C 'far':64B 'go':68B 'googl':26B,75C 'google':18A 'html':3A,42B,95C 'improp':69C 'input':31B,70C 'insid':8A,47B,89C 'limit':62B 'linux':22B 'load':57B 'maco':23B 'medium':100C 'mishandl':30B 'need':53B 'page':4A,43B,59B,96C 'performanceapi':34B,73C 'potenti':85C 'prior':77C 'remot':37B,82C 'render':49B 'run':6A 'runtim':24B 'sandbox':11A,50B,61B,91C 'secur':98C 'sever':99C 'valid':71C 'via':92C 'victim':55B 'window':25B","nicknames":[],"mitigations":[],"who_affected":null,"tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:19:22+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cvss_by":"134c704f-9b21-4f2e-91b3-4a467353bcc0","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-113289","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-113289","severity":null,"published_at":"2026-10-20T22:19:22+00:00","modified_at":"2026-10-21T17:07:08+00:00","first_seen_at":"2026-10-23T21:57:24+00:00","fetched_at":"2026-10-23T22:28:59+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"}