PT-2026-61960 · Home Assistant · Home Assistant Core

Harish Kolla · CVE-2026-64823 · Publicado 2026-07-21 · Atualizado 2026-07-21

NVD

CVSS v3.1

4.7

Média

Vetor base

AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

Home Assistant Core before 2026.5.4 contains a cross-site scripting vulnerability in the Shelly integration's async get media image() method that allows attackers controlling a Shelly device's thumb field to serve arbitrary HTML content by supplying a data URI with a text/html content type without validation against an image-only allowlist. Attackers can cause the media player proxy endpoint to serve attacker-controlled bytes with Content-Type text/html in the Home Assistant web origin, enabling theft of session tokens from local storage and authenticated calls to sensitive service endpoints including lock, alarm, and cover controls.

Correção

XSS

Enumeração de Fraquezas

CWE-79

Identificadores relacionados

CVE-2026-64823

Produtos afetados

Home Assistant Core

Referências · 5

• https://github.com/home-assistant/core/releases/tag/2026.5.4 · Nota
• https://github.com/home-assistant/core/pull/171585 · Nota
• https://github.com/home-assistant/core/commit/894a68acb678afc382fe5ea9002e61ab7f862011 · Correção
• https://nvd.nist.gov/vuln/detail/CVE-2026-64823 · Nota de Segurança
• https://vulncheck.com/advisories/home-assistant-core-xss-via-shelly-media-player-py-thumb-uri · Nota