{"id":"CVE-2026-118304","kind":"vulnerability","aliases":["CVE-2026-118304"],"related":[],"title":"Chrome: crafted SVG input lets a web page run code in sandbox","description":"Improper input validation in SVG in Google Chrome prior to 156.0.8078.73 allowed a remote attacker to potentially execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)","summary":"Google Chrome before 156.0.8078.73 mishandles input validation in its SVG code, so a crafted HTML page can make a remote attacker run arbitrary code inside the browser sandbox. Chromium rates the flaw High severity.","severity":"high","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browsers","chrome","endpoints","runtime"],"not_affected_if":["chrome-156-or-later","other-browser-only"],"how_to_check":"- Open chrome://version in the browser and read the version; it should be `156.0.8078.73` or later.\n- Run `google-chrome --version` on Linux or check the installed version on managed fleets.","fix":"- Update Google Chrome to `156.0.8078.73` or later.\n- Relaunch the browser after the update so the new version takes effect.","status":"open","published_at":"2026-10-27T23:16:58+00:00","first_seen_at":"2026-10-27T23:29:42+00:00","triaged_at":"2026-10-27T23:33:25+00:00","updated_at":"2026-10-27T23:33:25+00:00","category":"runtime","confidence":0.6,"triage":{"at":"2026-10-27T23:33:25Z","model":"claude-haiku-5-5","output":{"fix":"- Update Google Chrome to `156.0.8078.73` or later.\n- Relaunch the browser after the update so the new version takes effect.","reach":"internet","title":"Chrome: crafted SVG input lets a web page run code in sandbox","impact":"high","summary":"Google Chrome before 156.0.8078.73 mishandles input validation in its SVG code, so a crafted HTML page can make a remote attacker run arbitrary code inside the browser sandbox. Chromium rates the flaw High severity.","category":"runtime","nicknames":[],"who_cares":["chrome","browsers","endpoints"],"confidence":0.6,"needs_auth":"no","worst_case":"Attacker runs code inside the browser sandbox via a crafted page","analyst_note":"Check the Chrome release notes and the Chromium bug entry for the affected SVG component and whether a sandbox escape is chained; the NVD record gives no CVSS score.","how_to_check":"- Open chrome://version in the browser and read the version; it should be `156.0.8078.73` or later.\n- Run `google-chrome --version` on Linux or check the installed version on managed fleets.","needs_analyst":true,"not_affected_if":["chrome-156-or-later","other-browser-only"],"who_is_affected":"Any user who opens untrusted web pages in Google Chrome before 156.0.8078.73 is exposed, since the attack needs only a crafted HTML page. Managed fleets and shared workstations should be checked, because the flaw does not depend on an account or special setting. Teams that only run Chrome in a locked-down kiosk with a fixed version, or that use a different browser, can skip it.","user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000632,"input_tokens":3295,"output_tokens":604,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-118304':15A,18A '-2026':14A,17A '156.0.8078.73':26B,67C 'allow':68C 'arbitrari':45B,75C 'attack':43B,71C 'browser':19B,49B 'chrome':1A,20B,24B,64C 'chromium':51B,85C 'code':10A,33B,46B,76C 'craft':2A,36B,82C 'cve':13A,16A 'endpoint':21B 'execut':74C 'flaw':54B 'googl':23B,63C 'high':55B,88C 'html':37B,83C 'improp':57C 'input':4A,28B,58C 'insid':47B,77C 'let':5A 'make':40B 'mishandl':27B 'page':8A,38B,84C 'potenti':73C 'prior':65C 'rate':52B 'remot':42B,70C 'run':9A,44B 'runtim':22B 'sandbox':12A,50B,79C 'secur':86C 'sever':56B,87C 'svg':3A,32B,61C 'valid':29B,59C 'via':80C 'web':7A","nicknames":[],"mitigations":[],"who_affected":"Any user who opens untrusted web pages in Google Chrome before 156.0.8078.73 is exposed, since the attack needs only a crafted HTML page. Managed fleets and shared workstations should be checked, because the flaw does not depend on an account or special setting. Teams that only run Chrome in a locked-down kiosk with a fixed version, or that use a different browser, can skip it.","tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-27T23:16:58+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-118304","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-118304","severity":null,"published_at":"2026-10-27T23:16:58+00:00","modified_at":"2026-10-27T23:16:58+00:00","first_seen_at":"2026-10-27T23:29:42+00:00","fetched_at":"2026-10-27T23:29:42+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"}