CVE-2018-21019 is a high-severity (CVSS 7.5) Information Exposure vulnerability in homeassistant. A fix is available for homeassistant — see the affected versions and patch details below.
Home Assistant information disclosure vulnerability
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
homeassistantReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.
Description
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.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | homeassistant | all versions | 0.67.0pip install --upgrade 'homeassistant==0.67.0' |
Affected Products
home-assistanthome-assistantDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for homeassistant, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update homeassistant to 0.67.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2018-21019 is resolved across your whole dependency graph.
Workarounds
Assume what was exposed is already known: rotate any credential, token or key that the affected component could return, restrict the endpoint to callers that genuinely need it, and strip sensitive fields from responses and error output at the boundary rather than relying on the client not to read them.
Frequently Asked Questions
Is CVE-2018-21019 in your dependencies?
Find it across PyPI, including transitive dependencies.