{"id":"CVE-2026-121168","kind":"vulnerability","aliases":["CVE-2026-121168"],"related":[],"title":"Chrome DevTools: crafted HTML page can run code inside the browser sandbox","description":"Improper resource exposure in DevTools in Google Chrome prior to 157.0.8103.38 allowed a remote attacker leveraging social engineering to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Low)","summary":"A flaw in the DevTools component of Google Chrome before 157.0.8103.38 lets a remote attacker run arbitrary code inside the browser sandbox. The attack needs a victim to visit a crafted HTML page, and Chromium rates the issue Low severity.","severity":"low","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browsers","chrome","desktop","other"],"not_affected_if":["chrome-updated"],"how_to_check":"- Check the installed Chrome version in Chrome's About page (chrome://settings/help) or with the operating system's package manager.\n- Compare it with `157.0.8103.38`; a lower version is exposed.","fix":"- Google Chrome: move to `157.0.8103.38` or later.","status":"open","published_at":"2026-11-03T21:17:24+00:00","first_seen_at":"2026-11-03T21:19:23+00:00","triaged_at":"2026-11-03T21:23:20+00:00","updated_at":"2026-11-03T21:23:20+00:00","category":"other","confidence":0.6,"triage":{"at":"2026-11-03T21:23:20Z","model":"claude-haiku-5-5","output":{"fix":"- Google Chrome: move to `157.0.8103.38` or later.","reach":"internet","title":"Chrome DevTools: crafted HTML page can run code inside the browser sandbox","impact":"medium","summary":"A flaw in the DevTools component of Google Chrome before 157.0.8103.38 lets a remote attacker run arbitrary code inside the browser sandbox. The attack needs a victim to visit a crafted HTML page, and Chromium rates the issue Low severity.","audience":"everyone","category":"other","nicknames":[],"who_cares":["chrome","browsers","desktop"],"confidence":0.6,"fix_status":"available","needs_auth":"no","worst_case":"Code runs inside the browser sandbox after the victim visits a page","analyst_note":"","how_to_check":"- Check the installed Chrome version in Chrome's About page (chrome://settings/help) or with the operating system's package manager.\n- Compare it with `157.0.8103.38`; a lower version is exposed.","plain_action":"Update Google Chrome to version 157.0.8103.38 or later through its settings menu.","needs_analyst":false,"not_affected_if":["chrome-updated"],"who_is_affected":"Anyone running Google Chrome before 157.0.8103.38 is exposed, most directly on desktops where users browse untrusted sites. Systems that do not run Chrome, or run a newer build, can skip it. The sources do not say whether other Chromium-based browsers are affected.","user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"low"},"cost_usd":0.000685,"input_tokens":4115,"output_tokens":547,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-121168':15A,18A '-2026':14A,17A '157.0.8103.38':32B,72C 'allow':73C 'arbitrari':38B,82C 'attack':36B,45B,76C 'browser':11A,19B,42B 'chrome':1A,20B,30B,69C 'chromium':56B,92C 'code':8A,39B,83C 'compon':27B 'craft':3A,52B,89C 'cve':13A,16A 'desktop':21B 'devtool':2A,26B,66C 'engin':79C 'execut':81C 'exposur':64C 'flaw':23B 'googl':29B,68C 'html':4A,53B,90C 'improp':62C 'insid':9A,40B,84C 'issu':59B 'let':33B 'leverag':77C 'low':60B,95C 'need':46B 'page':5A,54B,91C 'prior':70C 'rate':57B 'remot':35B,75C 'resourc':63C 'run':7A,37B 'sandbox':12A,43B,86C 'secur':93C 'sever':61B,94C 'social':78C 'via':87C 'victim':48B 'visit':50B","nicknames":[],"mitigations":[],"who_affected":"Anyone running Google Chrome before 157.0.8103.38 is exposed, most directly on desktops where users browse untrusted sites. Systems that do not run Chrome, or run a newer build, can skip it. The sources do not say whether other Chromium-based browsers are affected.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"everyone","plain_action":"Update Google Chrome to version 157.0.8103.38 or later through its settings menu.","pkeys":[],"ptokens":[],"labels":["browsers","chrome","desktop","low","other"],"campaign_type":null,"first_public_at":"2026-11-03T21:17:24+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-121168","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121168","severity":null,"published_at":"2026-11-03T21:17:24+00:00","modified_at":"2026-11-03T21:17:25+00:00","first_seen_at":"2026-11-03T21:19:23+00:00","fetched_at":"2026-11-03T21:19:23+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"}