CVE-2021-47942: Hacs Home Assistant Community Store

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

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

• Hacs Home Assistant Community Store: before 1.10.0 (fixed in 1.10.0)

Published 2026-05-16. Last modified 2026-06-17.