{"id":"CVE-2021-3152","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-3152","generatedAt":"2026-10-27T23:38:12.680Z","title":"Home Assistant before 2021.1.3 does not have a protection layer that can help to prevent directory-traversal attacks against custom integrations.","description":"Home Assistant before 2021.1.3 does not have a protection layer that can help to prevent directory-traversal attacks against custom integrations. NOTE: the vendor's perspective is that the vulnerability itself is in custom integrations written by third parties, not in Home Assistant; however, Home Assistant does have a security update that is worthwhile in addressing this situation","published":"2021-01-26T18:16:28.000Z","lastModified":"2026-06-17T04:04:45.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},"cwe":["CWE-22"],"affected":["home-assistant/home-assistant"],"epss":{"score":0.02159,"percentile":0.82073,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (2.16%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://www.home-assistant.io/blog/2021/01/14/security-bulletin/","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://www.home-assistant.io/blog/2021/01/22/security-disclosure/","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://www.home-assistant.io/blog/2021/01/14/security-bulletin/","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.home-assistant.io/blog/2021/01/22/security-disclosure/","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-3152","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}