{"id":"CVE-2026-113058","kind":"vulnerability","aliases":["CVE-2026-113058"],"related":[],"title":"Chrome: use-after-free in WebUI lets crafted page run code","description":"Use after free in WebUI 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: High)","summary":"A use-after-free bug in Chrome's WebUI pages lets a remote attacker run arbitrary code inside the browser sandbox through a crafted HTML page. Visiting a malicious page is enough to trigger it, and the sources report a CVSS score of 8.8.","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":["browser","chrome","endpoints","linux","macos","runtime","windows"],"not_affected_if":["already-on-156.0.8078.47-or-later"],"how_to_check":"Run google-chrome --version (Linux), or check Chrome > About Chrome on Windows and macOS, and see if the version is below 156.0.8078.47.","fix":"Update Google Chrome to 156.0.8078.47 or later.","status":"open","published_at":"2026-10-20T22:18:57+00:00","first_seen_at":"2026-10-23T21:57:23+00:00","triaged_at":"2026-10-23T22:37:49+00:00","updated_at":"2026-10-23T22:37:49+00:00","category":"runtime","confidence":0.8,"triage":{"at":"2026-10-23T22:37:49Z","model":"claude-haiku-5-5","output":{"fix":"Update Google Chrome to 156.0.8078.47 or later.","reach":"internet","title":"Chrome: use-after-free in WebUI lets crafted page run code","impact":"high","summary":"A use-after-free bug in Chrome's WebUI pages lets a remote attacker run arbitrary code inside the browser sandbox through a crafted HTML page. Visiting a malicious page is enough to trigger it, and the sources report a CVSS score of 8.8.","category":"runtime","who_cares":["chrome","browser","windows","macos","linux"],"confidence":0.8,"needs_auth":"no","worst_case":"Attacker runs code inside the browser sandbox from a crafted page","analyst_note":"","how_to_check":"Run google-chrome --version (Linux), or check Chrome > About Chrome on Windows and macOS, and see if the version is below 156.0.8078.47.","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":0.000486,"input_tokens":2951,"output_tokens":381,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-113058':15A,18A '-2026':14A,17A '156.0.8078.47':83C '8.8':72B 'allow':84C 'arbitrari':44B,90C 'attack':42B,87C 'browser':21B,48B 'bug':33B 'chrome':1A,20A,22B,35B,80C 'chromium':100C 'code':12A,45B,91C 'craft':9A,52B,97C 'cve':13A,16A 'cvss':69B 'endpoint':23B 'enough':60B 'execut':89C 'free':5A,32B,75C 'googl':79C 'google':19A 'high':103C 'html':53B,98C 'insid':46B,92C 'let':8A,39B 'linux':24B 'maco':25B 'malici':57B 'page':10A,38B,54B,58B,99C 'prior':81C 'remot':41B,86C 'report':67B 'run':11A,43B 'runtim':26B 'sandbox':49B,94C 'score':70B 'secur':101C 'sever':102C 'sourc':66B 'trigger':62B 'use':3A,30B,73C 'use-after-fre':2A,29B 'via':95C 'visit':55B 'webui':7A,37B,77C 'window':27B","nicknames":[],"mitigations":[],"who_affected":null,"tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:18:57+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-2026-113058","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-113058","severity":null,"published_at":"2026-10-20T22:18:57+00:00","modified_at":"2026-10-21T21:08:22+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"}