{"id":"CVE-2026-113037","kind":"vulnerability","aliases":["CVE-2026-113037"],"related":[],"title":"Chrome: WebSockets use-after-free lets a web page run code in sandbox","description":"Use after free in WebSockets in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)","summary":"A use-after-free bug in Chrome's WebSockets code lets a remote attacker run arbitrary code inside the browser sandbox when the victim opens a crafted HTML page. The attacker gets code execution in the renderer sandbox, not full system access on its own.","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","desktop","package","runtime"],"not_affected_if":["chrome-at-or-above-156.0.8078.47"],"how_to_check":"Run chrome://version in Chrome and compare the version with 156.0.8078.47.\nOn managed machines, check the installed Chrome version with your MDM or endpoint tool.","fix":"Update Google Chrome to 156.0.8078.47 or later.\nRelaunch the browser after the update so the new version is running.","status":"open","published_at":"2026-10-20T22:18:54+00:00","first_seen_at":"2026-10-23T21:57:23+00:00","triaged_at":"2026-10-23T22:38:01+00:00","updated_at":"2026-10-23T22:38:01+00:00","category":"package","confidence":0.8,"triage":{"at":"2026-10-23T22:38:01Z","model":"claude-haiku-5-5","output":{"fix":"Update Google Chrome to 156.0.8078.47 or later.\nRelaunch the browser after the update so the new version is running.","reach":"internet","title":"Chrome: WebSockets use-after-free lets a web page run code in sandbox","impact":"high","summary":"A use-after-free bug in Chrome's WebSockets code lets a remote attacker run arbitrary code inside the browser sandbox when the victim opens a crafted HTML page. The attacker gets code execution in the renderer sandbox, not full system access on its own.","category":"package","who_cares":["chrome","desktop","browsers"],"confidence":0.8,"needs_auth":"no","worst_case":"Attacker runs arbitrary code inside the Chrome sandbox after a visit","analyst_note":"","how_to_check":"Run chrome://version in Chrome and compare the version with 156.0.8078.47.\nOn managed machines, check the installed Chrome version with your MDM or endpoint tool.","needs_analyst":false,"not_affected_if":["chrome-at-or-above-156.0.8078.47"],"user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000499,"input_tokens":2945,"output_tokens":410,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-113037':17A,20A '-2026':16A,19A '156.0.8078.47':81C 'access':70B 'allow':82C 'arbitrari':44B,88C 'attack':42B,59B,85C 'browser':23B,48B 'bug':33B 'chrome':1A,22A,24B,35B,78C 'chromium':98C 'code':12A,38B,45B,61B,89C 'craft':55B,95C 'cve':15A,18A 'desktop':25B 'execut':62B,87C 'free':6A,32B,73C 'full':68B 'get':60B 'googl':77C 'google':21A 'html':56B,96C 'insid':46B,90C 'let':7A,39B 'medium':101C 'open':53B 'packag':26B 'page':10A,57B,97C 'prior':79C 'remot':41B,84C 'render':65B 'run':11A,43B 'runtim':27B 'sandbox':14A,49B,66B,92C 'secur':99C 'sever':100C 'system':69B 'use':4A,30B,71C 'use-after-fre':3A,29B 'via':93C 'victim':52B 'web':9A 'websocket':2A,37B,75C","nicknames":[],"mitigations":[],"who_affected":null,"tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:18:54+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-2026-113037","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-113037","severity":null,"published_at":"2026-10-20T22:18:54+00:00","modified_at":"2026-10-21T19:24:50+00:00","first_seen_at":"2026-10-23T21:57:23+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"}