What’s Vulnerable › Vulnerabilities

CVE-2021-47942: Home Assistant Community Store 1.10.0 Path Traversal Account Takeover

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-05-16 · updated 2026-06-17
• Weakness: CWE-22

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.

Affected products

• Home-Assistant Home Assistant Community Store (HACS): before 1.10.0 — fixed in 1.10.0

How to fix

Upgrade to a fixed version: Home-Assistant Home Assistant Community Store (HACS) 1.10.0. Check the vendor advisory for mitigations.

References

• https://github.com/hacs/integration
• https://www.exploit-db.com/exploits/49495
• https://www.home-assistant.io/
• https://www.vulncheck.com/advisories/home-assistant-community-store-path-traversal-account-takeover

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