{"id":"CVE-2026-113203","kind":"vulnerability","aliases":["CVE-2026-113203"],"related":[],"title":"Chrome: CSS use-after-free lets a crafted web page run code","description":"Use after free in CSS in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)","summary":"Google Chrome versions before 156.0.8078.47 have a use-after-free bug in CSS handling. A remote attacker who gets a user to open a crafted HTML page can potentially execute arbitrary code inside the browser sandbox.","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 in Chrome and compare the version with 156.0.8078.47.","fix":"Update Google Chrome to 156.0.8078.47 or later.","status":"open","published_at":"2026-10-20T22:19:13+00:00","first_seen_at":"2026-10-23T21:57:24+00:00","triaged_at":"2026-10-23T22:36:16+00:00","updated_at":"2026-10-23T22:36:16+00:00","category":"package","confidence":0.8,"triage":{"at":"2026-10-23T22:36:16Z","model":"claude-haiku-5-5","output":{"fix":"Update Google Chrome to 156.0.8078.47 or later.","reach":"internet","title":"Chrome: CSS use-after-free lets a crafted web page run code","impact":"high","summary":"Google Chrome versions before 156.0.8078.47 have a use-after-free bug in CSS handling. A remote attacker who gets a user to open a crafted HTML page can potentially execute arbitrary code inside the browser sandbox.","category":"package","who_cares":["chrome","browsers","desktop"],"confidence":0.8,"needs_auth":"no","worst_case":"Attacker code runs inside the browser sandbox after a visit to a crafted page","analyst_note":"","how_to_check":"Run chrome://version in Chrome and compare the version with 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":0.000467,"input_tokens":2942,"output_tokens":346,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-113203':16A,19A '-2026':15A,18A '156.0.8078.47':31B,74C 'allow':75C 'arbitrari':58B,82C 'attack':44B,78C 'browser':22B,62B 'bug':38B 'chrome':1A,21A,23B,28B,71C 'chromium':92C 'code':13A,59B,83C 'craft':9A,52B,89C 'css':2A,40B,68C 'cve':14A,17A 'desktop':24B 'execut':57B,81C 'free':6A,37B,66C 'get':46B 'googl':27B,70C 'google':20A 'handl':41B 'html':53B,90C 'insid':60B,84C 'let':7A 'medium':95C 'open':50B 'packag':25B 'page':11A,54B,91C 'potenti':56B,80C 'prior':72C 'remot':43B,77C 'run':12A 'runtim':26B 'sandbox':63B,86C 'secur':93C 'sever':94C 'use':4A,35B,64C 'use-after-fre':3A,34B 'user':48B 'version':29B 'via':87C 'web':10A","nicknames":[],"mitigations":[],"who_affected":null,"tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:19:13+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-2026-113203","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-113203","severity":null,"published_at":"2026-10-20T22:19:13+00:00","modified_at":"2026-10-22T15:21:25+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"}