CVE-2020-36517

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-03-10 · updated 2026-06-17
Weakness: CWE-203

Description

An information leak in Nabu Casa Home Assistant Operating System and Home Assistant Supervised 2022.03 allows a DNS operator to gain knowledge about internal network resources via the hardcoded DNS resolver configuration.

Affected products

Home-Assistant: 2022.03

References

https://community.home-assistant.io/t/ha-os-dns-setting-configuration-not-respected/356572
https://github.com/home-assistant/plugin-dns/issues/17
https://github.com/home-assistant/plugin-dns/issues/20
https://github.com/home-assistant/plugin-dns/issues/22
https://github.com/home-assistant/plugin-dns/issues/50
https://github.com/home-assistant/plugin-dns/issues/51
https://github.com/home-assistant/plugin-dns/issues/53
https://github.com/home-assistant/plugin-dns/issues/54
https://github.com/home-assistant/plugin-dns/issues/6
https://github.com/home-assistant/plugin-dns/issues/64
https://github.com/home-assistant/plugin-dns/issues/70
https://github.com/home-assistant/plugin-dns/pull/55

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