CVE-2026-59717Network attack vector

Credential theft via hidden invite destination

Published Aug 7, 2026 · Updated Aug 7, 2026

Open redirect in Home Assistant Companion for Android before 2026.6.1 allows remote attackers to steal credentials via crafted invite links. The handleInviteLink method reads the URL parameter from a homeassistant://invite fragment and passes it verbatim into onboarding without showing the destination hostname. Exploitation requires a victim to open the link, approve connection, and enter credentials into an attacker-controlled login page in the URL-less WebView.

CVSS severity4.3
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Open redirect in Home Assistant Companion for Android before 2026.6.1 allows remote attackers to steal credentials via crafted invite links. The handleInviteLink method reads the URL parameter from a homeassistant://invite fragment and passes it verbatim into onboarding without showing the destination hostname. Exploitation requires a victim to open the link, approve connection, and enter credentials into an attacker-controlled login page in the URL-less WebView.

The record

CVE
CVE-2026-59717
Published
Aug 7, 2026
Updated
Aug 7, 2026
Vendor
Home Assistant
Product
Home Assistant Core
Classifications
CWE-939, CWE-601, T1417.002, T1660
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 7, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2026.6.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Home Assistant · Home Assistant Coreversion=< 2026.6.1

Published CVSS scores

4.3GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-939Improper Authorization in Handler for Custom URL Scheme
CWE-601URL Redirection to Untrusted Site ('Open Redirect')
T1417.002Input Capture: GUI Input Capture
T1660Phishing

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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