{"id":"CVE-2026-113278","kind":"vulnerability","aliases":["CVE-2026-113278"],"related":[],"title":"Chrome: use-after-free in extensions lets a web page run code","description":"Use after free in Extensions 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 memory bug in Chrome's Extensions component lets a remote attacker run arbitrary code inside the browser sandbox by serving a crafted HTML page. Chromium rates it medium, and NVD scores it high (CVSS 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":["browsers","chrome","desktop","package","runtime"],"not_affected_if":["already-on-156.0.8078.47-or-later"],"how_to_check":"Run chrome://version and confirm the version is below 156.0.8078.47.","fix":"Update Google Chrome to 156.0.8078.47 or later.","status":"open","published_at":"2026-10-20T22:19:21+00:00","first_seen_at":"2026-10-23T21:57:24+00:00","triaged_at":"2026-10-23T22:35:27+00:00","updated_at":"2026-10-23T22:35:27+00:00","category":"package","confidence":0.8,"triage":{"at":"2026-10-23T22:35:27Z","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 extensions lets a web page run code","impact":"medium","summary":"A memory bug in Chrome's Extensions component lets a remote attacker run arbitrary code inside the browser sandbox by serving a crafted HTML page. Chromium rates it medium, and NVD scores it high (CVSS 8.8).","category":"package","who_cares":["chrome","desktop","browsers"],"confidence":0.8,"needs_auth":"no","worst_case":"Attacker runs code inside the Chrome sandbox after a victim visits a page","analyst_note":"","how_to_check":"Run chrome://version and confirm 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":"unknown"},"cost_usd":0.000466,"input_tokens":2943,"output_tokens":344,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-113278':16A,19A '-2026':15A,18A '156.0.8078.47':73C '8.8':62B 'allow':74C 'arbitrari':40B,80C 'attack':38B,77C 'browser':22B,44B 'bug':29B 'chrome':1A,21A,23B,31B,70C 'chromium':52B,90C 'code':13A,41B,81C 'compon':34B 'craft':49B,87C 'cve':14A,17A 'cvss':61B 'desktop':24B 'execut':79C 'extens':7A,33B,67C 'free':5A,65C 'googl':69C 'google':20A 'high':60B 'html':50B,88C 'insid':42B,82C 'let':8A,35B 'medium':55B,93C 'memori':28B 'nvd':57B 'packag':25B 'page':11A,51B,89C 'prior':71C 'rate':53B 'remot':37B,76C 'run':12A,39B 'runtim':26B 'sandbox':45B,84C 'score':58B 'secur':91C 'serv':47B 'sever':92C 'use':3A,63C 'use-after-fre':2A 'via':85C 'web':10A","nicknames":[],"mitigations":[],"who_affected":null,"tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:19:21+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-2026-113278","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-113278","severity":null,"published_at":"2026-10-20T22:19:21+00:00","modified_at":"2026-10-21T17:08:12+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"}