{"id":"CVE-2026-113087","kind":"vulnerability","aliases":["CVE-2026-113087"],"related":[],"title":"Chrome: use-after-free in Actor lets a web page run code","description":"Use after free in Actor 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 the Actor component of Google Chrome before 156.0.8078.47 lets a remote attacker run arbitrary code inside the browser sandbox via a crafted HTML page. The attacker needs the victim to load that page, and the sandbox still has to be escaped for full control.","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","runtime"],"not_affected_if":["already-updated-chrome"],"how_to_check":"Open chrome://version 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 and restart the browser.","status":"open","published_at":"2026-10-20T22:19:00+00:00","first_seen_at":"2026-10-23T21:57:23+00:00","triaged_at":"2026-10-23T22:37:30+00:00","updated_at":"2026-10-23T22:37:30+00:00","category":"runtime","confidence":0.8,"triage":{"at":"2026-10-23T22:37:30Z","model":"claude-haiku-5-5","output":{"fix":"Update Google Chrome to 156.0.8078.47 or later and restart the browser.","reach":"internet","title":"Chrome: use-after-free in Actor lets a web page run code","impact":"high","summary":"A use-after-free bug in the Actor component of Google Chrome before 156.0.8078.47 lets a remote attacker run arbitrary code inside the browser sandbox via a crafted HTML page. The attacker needs the victim to load that page, and the sandbox still has to be escaped for full control.","category":"runtime","who_cares":["chrome","desktop","browsers"],"confidence":0.8,"needs_auth":"no","worst_case":"Code runs inside the browser sandbox after a victim visits a page","analyst_note":"","how_to_check":"Open chrome://version 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":["already-updated-chrome"],"user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000485,"input_tokens":2942,"output_tokens":382,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-113087':16A,19A '-2026':15A,18A '156.0.8078.47':40B,87C 'actor':7A,34B,81C 'allow':88C 'arbitrari':46B,94C 'attack':44B,58B,91C 'browser':22B,50B 'bug':31B 'chrome':1A,21A,23B,38B,84C 'chromium':104C 'code':13A,47B,95C 'compon':35B 'control':76B 'craft':54B,101C 'cve':14A,17A 'desktop':24B 'escap':73B 'execut':93C 'free':5A,30B,79C 'full':75B 'googl':37B,83C 'google':20A 'html':55B,102C 'insid':48B,96C 'let':8A,41B 'load':63B 'medium':107C 'need':59B 'page':11A,56B,65B,103C 'prior':85C 'remot':43B,90C 'run':12A,45B 'runtim':25B 'sandbox':51B,68B,98C 'secur':105C 'sever':106C 'still':69B 'use':3A,28B,77C 'use-after-fre':2A,27B 'via':52B,99C 'victim':61B 'web':10A","nicknames":[],"mitigations":[],"who_affected":null,"tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:19:00+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-2026-113087","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-113087","severity":null,"published_at":"2026-10-20T22:19:00+00:00","modified_at":"2026-10-22T15:34:11+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"}