CVE-2021-3152 json
Home Assistant before 2021.1.3 does not have a protection layer that can help to prevent directory-traversal attacks against custom integra…
published 2021-01-21 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-26496
- cvss
- 5.3
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.2%
- EPSS 2.2% chance of exploitation in 30 days, percentile 82%
- public exploits
- 0
- none known, plus a Nuclei check
Summary
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
Patch / fix
- home-assistant home-assistant 2021.1.3
Exploit prediction
2.16% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Nuclei template Home Assistant HACS - Local File Inclusion nuclei detection template
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
Classification
- Weakness
-
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory
References
-
home-assistant.io
/blog/2021/01/14/security-bulletin/
vendor-advisory
-
home-assistant.io
/blog/2021/01/22/security-disclosure/
vendor-advisory
Sources
- CVE List CVE-2021-3152
- NVD CVE-2021-3152
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