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Description

Home Assistant Community Store (HACS) 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.

PUBLISHED Reserved 2026-02-01 | Published 2026-05-16 | Updated 2026-05-16 | Assigner VulnCheck




HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Problem types

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Product status

Any version before 1.10.0
affected

Credits

Lyghtnox finder

References

www.exploit-db.com/exploits/49495 (ExploitDB-49495) exploit

www.home-assistant.io/ (Official Product Homepage) product

github.com/hacs/integration (Product Reference) product

www.vulncheck.com/...y-store-path-traversal-account-takeover (VulnCheck Advisory: Home Assistant Community Store 1.10.0 Path Traversal Account Takeover) third-party-advisory

cve.org (CVE-2021-47942)

nvd.nist.gov (CVE-2021-47942)

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