CVE-2021-47942 - CVE House
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Status published High CVE-2021-47942

Home Assistant Community Store 1.10.0 Path Traversal Account Takeover

Vulnerability Description

Home Assistant Community Store (HACS) prior to 1.10.0 contains a path traversal vulnerability that allows unauthenticated attackers to read sensitive files by traversing directories via the /hacsfiles/ endpoint. Attackers can retrieve the .storage/auth file containing user credentials and refresh tokens, then craft valid JWT tokens to gain administrative access to Home Assistant instances.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Lyghtnox

Affected Vendor

Home-Assistant

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Affected Software

Home Assistant Community Store (HACS)
Vulnerable Versions:
0

Timeline

Official Publish: May 16th, 2026
Last Modified: May 25th, 2026
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Weaknesses (CWE)