{"id":"CVE-2026-118341","kind":"vulnerability","aliases":["CVE-2026-118341"],"related":[],"title":"Chrome: use-after-free in Modularization lets a web page run code","description":"Use after free in Modularization in Google Chrome prior to 156.0.8078.73 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)","summary":"A use-after-free bug in the Modularization component of Google Chrome before 156.0.8078.73 lets a remote attacker run arbitrary code inside the browser sandbox. The attacker only needs the victim to load a crafted HTML page.","severity":"high","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browsers","chrome","endpoints","infrastructure"],"not_affected_if":["chrome-updated"],"how_to_check":"- Run `chrome --version` or check chrome://settings/help to see the installed version\n- Compare the result against `156.0.8078.73`","fix":"- Update Google Chrome to `156.0.8078.73` or later\n- Restart the browser after the update so the new version is running","status":"open","published_at":"2026-10-27T23:17:03+00:00","first_seen_at":"2026-10-27T23:29:43+00:00","triaged_at":"2026-10-27T23:31:42+00:00","updated_at":"2026-10-27T23:31:42+00:00","category":"infrastructure","confidence":0.7,"triage":{"at":"2026-10-27T23:31:42Z","model":"claude-haiku-5-5","output":{"fix":"- Update Google Chrome to `156.0.8078.73` or later\n- Restart the browser after the update so the new version is running","reach":"internet","title":"Chrome: use-after-free in Modularization lets a web page run code","impact":"high","summary":"A use-after-free bug in the Modularization component of Google Chrome before 156.0.8078.73 lets a remote attacker run arbitrary code inside the browser sandbox. The attacker only needs the victim to load a crafted HTML page.","category":"infrastructure","nicknames":[],"who_cares":["chrome","browsers","endpoints"],"confidence":0.7,"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` or check chrome://settings/help to see the installed version\n- Compare the result against `156.0.8078.73`","needs_analyst":false,"not_affected_if":["chrome-updated"],"who_is_affected":"Anyone running Google Chrome older than 156.0.8078.73 on desktop or mobile is exposed when they open a malicious or compromised web page. Teams that manage browsers on employee machines should check versions there. Systems that run no Chrome build below that version can skip it.","user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000568,"input_tokens":3289,"output_tokens":479,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-118341':16A,19A '-2026':15A,18A '156.0.8078.73':38B,72C 'allow':73C 'arbitrari':44B,79C 'attack':42B,51B,76C 'browser':20B,48B 'bug':29B 'chrome':1A,21B,36B,69C 'chromium':89C 'code':13A,45B,80C 'compon':33B 'craft':59B,86C 'cve':14A,17A 'endpoint':22B 'execut':78C 'free':5A,28B,64C 'googl':35B,68C 'high':92C 'html':60B,87C 'infrastructur':23B 'insid':46B,81C 'let':8A,39B 'load':57B 'modular':7A,32B,66C 'need':53B 'page':11A,61B,88C 'prior':70C 'remot':41B,75C 'run':12A,43B 'sandbox':49B,83C 'secur':90C 'sever':91C 'use':3A,26B,62C 'use-after-fre':2A,25B 'via':84C 'victim':55B 'web':10A","nicknames":[],"mitigations":[],"who_affected":"Anyone running Google Chrome older than 156.0.8078.73 on desktop or mobile is exposed when they open a malicious or compromised web page. Teams that manage browsers on employee machines should check versions there. Systems that run no Chrome build below that version can skip it.","tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-27T23:17:03+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-118341","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-118341","severity":null,"published_at":"2026-10-27T23:17:03+00:00","modified_at":"2026-10-27T23:17:03+00:00","first_seen_at":"2026-10-27T23:29:43+00:00","fetched_at":"2026-10-27T23:29:43+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"}