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TI-2023-22290 Aliases CVE-2023-41898

Arbitrary URL load in Android WebView in `MyActivity.kt` in Home Assistant Companion for Android

Priority LOW 38CWE-345Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Security bypass, Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-345 and CWE-94.

Summary

Home assistant is an open source home automation. The Home Assistant Companion for Android app up to version 2023.8.2 is vulnerable to arbitrary URL loading in a WebView. This enables all sorts of attacks, including arbitrary JavaScript execution, limited native code execution, and credential theft. This issue has been patched in version 2023.9.2 and all users are advised to upgrade. There are no known workarounds for this vulnerability. This issue is also tracked as GitHub Security Lab (GHSL) Vulnerability Report: `GHSL-2023-142`.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00178 7th percentileScored 2026-11-07
Fix Fixed core (home-assistant): 2023.9.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
home-assistantcorebefore 2023.9.22023.9.2Patch availableCNA
  • core Vendorhome-assistant Affected before 2023.9.2 Fixed in 2023.9.2 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:home-assistant:home_assistant_companion:*:*:*:*:*:android:*:*before 2023.9.2Vulnerablehome-assistant
  • cpe:2.3:a:home-assistant:home_assistant_companion:*:*:*:*:*:android:*:* Versions before 2023.9.2 Vulnerable ·home-assistant

Remediation

  • Fix · CNA core (home-assistant) Fixed in 2023.9.2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-41898

References

Advisory 1

  • TI-2026-39213 Home Assistant: Exported BroadcastReceiver allows local apps to spoof device location CVSS 3.1HIGH 7.1
  • TI-2023-23891 Client-Side Request Forgery in Home Assistant iOS/macOS native Apps CVSS 3.1HIGH 8.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences