CVE-2023-41898

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

HIGH
7.8
CVSS Score
Published: October 19, 2023 at 10:08 PM UTC
Updated: June 17, 2026 at 06:23 AM UTC
2 products affected across 1 vendorHome Assistant CompanionHome Assistant

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

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`.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2023.9.2
Affected range stops below 2023.9.2, so it looks safe — our inference, not a vendor statement
v < 2023.9.2
Affected range stops below 2023.9.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-94CWE-345

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