{"id":"CVE-2026-113103","kind":"vulnerability","aliases":["CVE-2026-113103"],"related":[],"title":"Chrome: use-after-free in WebProtect lets a crafted page run code","description":"Use after free in WebProtect 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: Low)","summary":"A use-after-free bug in Chrome's WebProtect component lets a remote attacker run arbitrary code inside the browser sandbox by serving a crafted HTML page. Visiting the attacker's page is enough to trigger it, so a user browsing with an affected Chrome build is exposed.","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-updated"],"how_to_check":"Open chrome://settings/help and read the version; anything below 156.0.8078.47 is affected.","fix":"Update Google Chrome to 156.0.8078.47 or later.","status":"open","published_at":"2026-10-20T22:19:02+00:00","first_seen_at":"2026-10-23T21:57:24+00:00","triaged_at":"2026-10-23T22:37:21+00:00","updated_at":"2026-10-23T22:37:21+00:00","category":"package","confidence":0.8,"triage":{"at":"2026-10-23T22:37:21Z","model":"claude-haiku-5-5","output":{"fix":"Update Google Chrome to 156.0.8078.47 or later.\nunknown","reach":"internet","title":"Chrome: use-after-free in WebProtect lets a crafted page run code","impact":"medium","summary":"A use-after-free bug in Chrome's WebProtect component lets a remote attacker run arbitrary code inside the browser sandbox by serving a crafted HTML page. Visiting the attacker's page is enough to trigger it, so a user browsing with an affected Chrome build is exposed.","category":"package","who_cares":["chrome","desktop","browsers"],"confidence":0.8,"needs_auth":"no","worst_case":"Attacker runs code inside Chrome's sandbox after the victim visits a page","analyst_note":"","how_to_check":"Open chrome://settings/help and read the version; anything below 156.0.8078.47 is affected.\nunknown","needs_analyst":false,"not_affected_if":["already-updated"],"user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000477,"input_tokens":2944,"output_tokens":366,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-113103':16A,19A '-2026':15A,18A '156.0.8078.47':86C 'affect':71B 'allow':87C 'arbitrari':43B,93C 'attack':41B,57B,90C 'brows':68B 'browser':22B,47B 'bug':32B 'build':73B 'chrome':1A,21A,23B,34B,72B,83C 'chromium':103C 'code':13A,44B,94C 'compon':37B 'craft':10A,52B,100C 'cve':14A,17A 'desktop':24B 'enough':61B 'execut':92C 'expos':75B 'free':5A,31B,78C 'googl':82C 'google':20A 'html':53B,101C 'insid':45B,95C 'let':8A,38B 'low':106C 'packag':25B 'page':11A,54B,59B,102C 'prior':84C 'remot':40B,89C 'run':12A,42B 'runtim':26B 'sandbox':48B,97C 'secur':104C 'serv':50B 'sever':105C 'trigger':63B 'use':3A,29B,76C 'use-after-fre':2A,28B 'user':67B 'via':98C 'visit':55B 'webprotect':7A,36B,80C","nicknames":[],"mitigations":[],"who_affected":null,"tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:19:02+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-2026-113103","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-113103","severity":null,"published_at":"2026-10-20T22:19:02+00:00","modified_at":"2026-10-22T15:33:47+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"}