Is CVE-2026-44698 actively exploited?

No active exploitation of CVE-2026-44698 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-44698 be exploited remotely?

Yes. CVE-2026-44698 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-44698?

CVE-2026-44698 has a CVSS score of 8.3 (HIGH).

HOME VULNERABILITIESCVE-2026-44698

HIGH

CVE-2026-44698

CWE-94Published: May 29, 2026· Updated: May 29, 2026

8.3

CVSS v3.1

EPSS:0.02%probability of exploitation in 30 daysPercentile:5.3th

Official Description

Home Assistant is open source home automation software that puts local control and privacy first. Prior to 2026.4.1 for iOS and 2026.4.4 for Android, he Home Assistant Companion apps for Android and iOS expose a JavaScript bridge to the in-app WebView window.externalApp on Android and webkit.messageHandlers.getExternalAuth (alongside revokeExternalAuth and externalBus) on iOS. Two flaws expose the bridge to all frames (including cross-origin iframes) and unsanitized interpolation of the JavaScript callback identifier allows a cross-origin iframe rendered inside the Companion app to execute arbitrary JavaScript in the Home Assistant frontend's main-frame origin and exfiltrate the signed-in user's access token. This vulnerability is fixed in 2026.4.1 for iOS and 2026.4.4 for Android.

NVD Source

Technical Analysis

CVE-2026-44698 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.3.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.