Home Assistant Green mDNS SSRF Vulnerability Allows Unauthenticated Server‑Side Requests
What Happened — A Server‑Side Request Forgery (SSRF) flaw (CVE‑2026‑XXXX) was discovered in the mDNS service of Home Assistant Green. An attacker on the same local network can trigger arbitrary HTTP requests without authentication, and when chained with other bugs can achieve root‑level code execution. Home Assistant has released a patch to remediate the issue.
Why It Matters for Compliance & Audit Readiness
- The flaw exemplifies a missing validation control that SOC 2’s CC6.1 – System Configuration expects organizations to enforce and continuously evidence.
- Continuous‑compliance programs must map such configuration gaps to audit controls and retain proof of remediation, exactly the scenario addressed by Verisq’s Control Mapping capability.
Who Is Affected — Smart‑home and IoT platform providers, particularly users of Home Assistant Green (consumer and small‑business deployments).
Recommended Actions
- Apply the vendor‑supplied update immediately.
- Document the configuration change against SOC 2 CC6.1 and capture the patch version as audit evidence.
- Deploy continuous monitoring of service‑level configurations to detect future validation gaps.
Source: Zero Day Initiative Advisory
Technical Notes
- CVSS 5.4 (AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N).
- Attack vector: network‑adjacent, no authentication required.
- Exploitation path: SSRF → potential remote code execution when combined with other vulnerabilities.