Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
The esphome-device-builder package is vulnerable before 1.0.10. On Home Assistant add-on installs running in host network mode, the unauthenticated ingress site was bound to all interfaces, so any device on the local network could open the full dashboard without credentials and gain host-equivalent control of the add-on. Upgrade to version 1.0.10 or newer, or restrict the add-on's ingress port to the Home Assistant host and supervisor at the network layer.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 8.8 | High | 3.1 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.012, the 67th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 28 Oct 2026, 13:12 UTC Confirmed by the CVE List
- 28 Oct 2026, 14:17 UTC Confirmed by NVD
- 31 Oct 2026, 14:10 UTC First seen by agentprime
- 31 Oct 2026, 14:10 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-vv4j-m4vr-f3g6
- OSV: GHSA-vv4j-m4vr-f3g6
- github.com/esphome/device-builder/security/advisories/GHSA-vv4j-m4vr-f3g6
- github.com/esphome/device-builder/pull/1565
- github.com/esphome/device-builder/commit/b6387db3f8bf1d3df5771f40e9856b959ae4f6a1
- github.com/esphome/device-builder