Home Assistant before 2021.1.3 does not have a protection layer that can help to prevent…
Priority LOW 28CWE-22Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-22 and the CVSS impact.
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
Why it matters now
EPSS 0.02159 82nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:home-assistant:home-assistant:*:*:*:*:*:*:*:* | before 2021.1.3 | Vulnerable | home-assistant |
- cpe:2.3:a:home-assistant:home-assistant:*:*:*:*:*:*:*:* Versions before 2021.1.3 Vulnerable ·home-assistant
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-3152
- 2026-10-03 Alias added: GHSA-jxm2-grrm-xcrf
References
More Home-assistant vulnerabilities
- TI-2023-12210 Improper authentication in home-assistant core CVSS 3.1CRITICAL 10.0
- TI-2026-25491 Home Assistant has stored XSS in history-graphs CVSS 4.0HIGH 7.3
- TI-2026-25490 Home Assistant has stored XSS in Map-card through malicious device name CVSS 4.0HIGH 7.3
- TI-2026-39212 Home Assistant: Konnected alarm-panel switch state and zone topology disclosed to unauthenticated actors on the LAN CVSS 3.1HIGH 7.6
- TI-2025-40423 Home Assistant Core before v2025.8.0 is vulnerable to Directory Traversal. CVSS 3.1MEDIUM 4.0
- TI-2023-22289 Lack of XFO header allows clickjacking in Home Assistant Core CVSS 3.1CRITICAL 9.6
Sources
- CVE-2021-3152 · CVE Program
- CVE-2021-3152 · NVD
- FIRST EPSS
- GHSA-jxm2-grrm-xcrf · GitHub Advisory Database · CC BY 4.0
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