Home Assistant Green stores credentials in cleartext, enabling local privilege escalation
Original title: ZDI-26-896: (Pwn2Own) Home Assistant Green Cleartext Storage of Credentials Local Privilege Escalation Vulnerability
Attackers need low-privileged code in a container first; ZDI rates CVE-2026-91131 at CVSS 8.8.
ZDI published ZDI-26-896, a local privilege escalation in Home Assistant Green tied to cleartext storage of credentials and disclosed through Pwn2Own. Exploitation requires the ability to run low-privileged code inside a container on the target. The advisory assigns CVE-2026-91131 and a CVSS score of 8.8 but does not list affected versions or a fix.
Unconfirmed: Affected versions, a fix, and whether the flaw is exploited are not stated.
- The issue is tracked as CVE-2026-91131 and ZDI-26-896.
- ZDI assigned a CVSS score of 8.8.
- The advisory title links the finding to Pwn2Own.
- No fixed version appears in the published snippet.
Impact: Local privilege escalation after code runs in a container
| Product | Affected |
|---|---|
| Home Assistant Green | — |
- CVEs
- CVE-2026-91131
- Vendors
- Home Assistant
- Products
- Home Assistant Green
- Organizations
- Zero Day Initiative
Vulnerabilities mentioned
All| CVE | Vulnerability | CVSS | EPSS | Signals | Published |
|---|---|---|---|---|---|
| CVE-2026-91131 | — | — | — |
From the original article
This vulnerability allows local attackers to escalate privileges on affected installations of Home Assistant Green. An attacker must first obtain the ability to execute low-privileged code within a container on the target system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 8.
zerodayinitiative.com
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