# CVE-2018-21019: Home Assistant information disclosure vulnerability

Source: https://junglewise.ai/threats/cve-2018-21019-home-assistant-information-disclosure-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2019-09-23  
License: CC BY 4.0 with a link back

CVE-2018-21019 · Severity: low · CVSS 3.1 · Published 2019-09-23

Home Assistant before 0.67.0 was vulnerable to an information disclosure that allowed an unauthenticated attacker to read the application's error log via components/api.py.

Technologies: [homeassistant (PyPI)](https://junglewise.ai/threats/technologies/homeassistant). Vendors: [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2018-21019 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2018-21019 being exploited in the wild.

**How severe is CVE-2018-21019?** Low severity, with a CVSS score of 3.1, published 23 September 2019.

**Which products and versions are affected?** homeassistant (PyPI) ECOSYSTEM:introduced=0,fixed=0.67.0.

**Is there a fix for CVE-2018-21019?** Yes. homeassistant (PyPI): upgrade to 0.67.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2018-21019?** Check whether you run homeassistant (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- homeassistant (PyPI): upgrade to 0.67.0 or later

  ```sh
  pip install "homeassistant>=0.67.0"
  ```


## Affected products

- homeassistant (PyPI) ECOSYSTEM:introduced=0,fixed=0.67.0

## Identifiers

- CVE-2018-21019
- GHSA-mh78-8f49-vjg3
- PYSEC-2019-221

## Related threats

- [Home Assistant Statistics Graph Card XSS via entity names](https://junglewise.ai/threats/cve-2026-91130-home-assistant-statistics-graph-card-xss-via-entity-names)
- [Home Assistant Server-Side Request Forgery in mDNS IPP integration](https://junglewise.ai/threats/cve-2026-91129-home-assistant-server-side-request-forgery-in-mdns-ipp)
- [Home Assistant Core path traversal in backup upload](https://junglewise.ai/threats/cve-2026-64825-home-assistant-core-path-traversal-in-backup-upload)
- [PYSEC-2026-1452 - Home Assistant does not correctly validate SSL for outgoing requests in core and used libs](https://junglewise.ai/threats/cve-2025-25305-home-assistant-does-not-correctly-validate-ssl-for-outgoing)
- [PYSEC-2026-1451 - User accounts disclosed to unauthenticated actors on the LAN](https://junglewise.ai/threats/cve-2023-50715-user-accounts-disclosed-to-unauthenticated-actors-on-the-lan)