CVE-2021-47942: Home Assistant Community Store (HACS) prior to 1.10.0 contains a path traversal vulnerability that allows unau

Q: How do I fix CVE-2021-47942?

home assistant community store: upgrade to 1.10.0. Exact commands for each OS are on this page.

Q: Is CVE-2021-47942 being exploited?

CVE-2021-47942 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-47942 affect?

CVE-2021-47942 affects home assistant community store. Severity is high (CVSS 7.5). 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 .

Q: How urgent is CVE-2021-47942?

Priority 47/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2021-47942 is a high-severity flaw (CVSS 7.5) affecting home assistant community store. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 58%)
CISA exploited list	No
Weakness	CWE-22
Published	2026-05-16
Last modified	2026-06-17

Publisher (CNA): VulnCheck · Vendor: hacs

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-16 16:16 UTCPublished CVE record published
2026-06-17 04:18 UTCUpdated Record last modified

hacs home assistant community store UPGRADE

Affected: < 1.10.0

Fixed in: 1.10.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy home-assistant-community-store || rpm -q home-assistant-community-store || home-assistant-community-store --version

2. UPGRADE to 1.10.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade home-assistant-community-store

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade home-assistant-community-store

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-47942?

home assistant community store: upgrade to 1.10.0. Exact commands for each OS are on this page.

Is CVE-2021-47942 being exploited?

CVE-2021-47942 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-47942 affect?

CVE-2021-47942 affects home assistant community store. Severity is high (CVSS 7.5). 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 .

How urgent is CVE-2021-47942?

Priority 47/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Home Assistant vulnerabilities

References

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