{"id":"CVE-2026-113311","kind":"vulnerability","aliases":["CVE-2026-113311"],"related":[],"title":"Chrome: ServiceWorker use-after-free lets a web page run code in the sandbox","description":"Use after free in ServiceWorker 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 ServiceWorker code lets a remote attacker run arbitrary code inside the browser sandbox by luring a user to a crafted HTML page. Exploitation requires a victim to visit the page, and the sandbox limits what the code can reach directly.","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":["already-on-156.0.8078.47-or-later"],"how_to_check":null,"fix":"Update Google Chrome to 156.0.8078.47 or later.","status":"open","published_at":"2026-10-20T22:19:25+00:00","first_seen_at":"2026-10-23T21:57:24+00:00","triaged_at":"2026-10-23T22:35:10+00:00","updated_at":"2026-10-23T22:35:10+00:00","category":"package","confidence":0.7,"triage":{"at":"2026-10-23T22:35:10Z","model":"claude-haiku-5-5","output":{"fix":"Update Google Chrome to 156.0.8078.47 or later.","reach":"internet","title":"Chrome: ServiceWorker use-after-free lets a web page run code in the sandbox","impact":"medium","summary":"A use-after-free bug in Chrome's ServiceWorker code lets a remote attacker run arbitrary code inside the browser sandbox by luring a user to a crafted HTML page. Exploitation requires a victim to visit the page, and the sandbox limits what the code can reach directly.","category":"package","who_cares":["chrome","desktop","browsers"],"confidence":0.7,"needs_auth":"no","worst_case":"Attacker runs code inside the Chrome sandbox from a malicious page","analyst_note":"","how_to_check":"unknown","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":0.000465,"input_tokens":2944,"output_tokens":341,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-113311':18A,21A '-2026':17A,20A '156.0.8078.47':88C 'allow':89C 'arbitrari':45B,95C 'attack':43B,92C 'browser':24B,49B 'bug':34B 'chrome':1A,23A,25B,36B,85C 'chromium':105C 'code':12A,39B,46B,74B,96C 'craft':57B,102C 'cve':16A,19A 'desktop':26B 'direct':77B 'execut':94C 'exploit':60B 'free':6A,33B,80C 'googl':84C 'google':22A 'html':58B,103C 'insid':47B,97C 'let':7A,40B 'limit':71B 'lure':52B 'medium':108C 'packag':27B 'page':10A,59B,67B,104C 'prior':86C 'reach':76B 'remot':42B,91C 'requir':61B 'run':11A,44B 'runtim':28B 'sandbox':15A,50B,70B,99C 'secur':106C 'servicework':2A,38B,82C 'sever':107C 'use':4A,31B,78C 'use-after-fre':3A,30B 'user':54B 'via':100C 'victim':63B 'visit':65B 'web':9A","nicknames":[],"mitigations":[],"who_affected":null,"tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:19:25+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-2026-113311","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-113311","severity":null,"published_at":"2026-10-20T22:19:25+00:00","modified_at":"2026-10-21T17:05:27+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"}