ZDI-26-562: (Pwn2Own) Home Assistant Green mDNS Server-Side Request Forgery Vulnerability
This vulnerability allows network-adjacent attackers to initiate arbitrary server-side requests on affected installations of Home Assistant Green. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 5.4.
AI Analysis
Technical Summary
The Home Assistant Green product contains a server-side request forgery vulnerability in its mDNS service. Network-adjacent attackers can exploit this flaw without authentication by sending crafted requests that bypass URI validation, enabling arbitrary server-side requests. This vulnerability can be chained with other flaws to achieve arbitrary code execution with root privileges. The vendor has issued an update to fix this vulnerability, as detailed in the referenced GitHub pull request.
Potential Impact
Exploitation allows an attacker on the same network segment to make arbitrary server-side requests on the affected Home Assistant Green installation without authentication. This can lead to information disclosure and, when combined with other vulnerabilities, may result in arbitrary code execution as root.
Mitigation Recommendations
Home Assistant has released an update that corrects this vulnerability. Users should apply the official update from Home Assistant to remediate this issue. No additional mitigation steps are indicated by the vendor advisory.
ZDI-26-562: (Pwn2Own) Home Assistant Green mDNS Server-Side Request Forgery Vulnerability
Description
This vulnerability allows network-adjacent attackers to initiate arbitrary server-side requests on affected installations of Home Assistant Green. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 5.4.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Home Assistant Green product contains a server-side request forgery vulnerability in its mDNS service. Network-adjacent attackers can exploit this flaw without authentication by sending crafted requests that bypass URI validation, enabling arbitrary server-side requests. This vulnerability can be chained with other flaws to achieve arbitrary code execution with root privileges. The vendor has issued an update to fix this vulnerability, as detailed in the referenced GitHub pull request.
Potential Impact
Exploitation allows an attacker on the same network segment to make arbitrary server-side requests on the affected Home Assistant Green installation without authentication. This can lead to information disclosure and, when combined with other vulnerabilities, may result in arbitrary code execution as root.
Mitigation Recommendations
Home Assistant has released an update that corrects this vulnerability. Users should apply the official update from Home Assistant to remediate this issue. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Classification
- {"confidence":0.95,"severitySource":"cvss-text","classifier":"rss-v2"}
- Article Source
- {"url":"http://www.zerodayinitiative.com/advisories/ZDI-26-562/","fetched":true,"fetchedAt":"2026-08-12T20:03:11.929Z","wordCount":190}
Threat ID: 6a7cd317bf8831d5391487b3
Added to database: 08/12/2026, 20:09:59 UTC
Last enriched: 08/12/2026, 20:10:32 UTC
Last updated: 08/13/2026, 00:56:35 UTC
Views: 4
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