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Home Assistant 2026.5.4 – safe to update?

What's in this release

CVEs fixed

• CVE-2026-64823 LOW 2.1 (NVD: fixed in this version)
  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 UR…

Community reports

• Problem HA Core Update 2026.5.4 - issues after upgrade · Reddit · 2026-05-23

  I'm running 2026.5.3 as a VM on Proxmox and all is going well. I upgraded to 2026.5.4 and the system appeared to still be functional, but it was consuming high amounts of CPU. I rebooted the HA VM to see if it just needed a fresh start and it came back with the high CPU usage im…

• Mention I got tired of writing 'timer + automation' for every 'recently active' check, so I built a template blueprint that does it all as a single sensor · Reddit · 2026-06-09

  Recently Active: A Template Blueprint With an On/Off State Plus an Off Delay All-In-One Recently Active is a template blueprint that builds a binary sensor that reads on while a source is on, and stays on for a window of seconds after the source clears. It works on any on/off so…

• Mention nabu casa doesn't stop webrtc from leaking your local ips · Reddit · 2026-06-07

  I access my HA instance through Nabu Casa and just assumed the reverse proxy handled everything. Ran one of those WebRTC leak checkers on Chrome 137 and it spun up a local RTCPeerConnection to enumerate my network interfaces. My 192.168.1.x came back as a host candidate, visible…

• Mention Home Assistant Rebooting · Reddit · 2026-06-02

  My home assistant is rebooting on its own and I’m having trouble figuring out why. Installation method - Home Assistant OS Core - 2026.5.4 Supervisor - 2026.05.1 Operating System - 17.3 Frontend - 20260429.4 VM on proxmox, n5105, 10gb ram, local ssd, PostgreSQL recorder on docke…

• Mention I have updated to Core 2026.5.4 several times... still says I have an update to 2026.5.4! · Reddit · 2026-05-28

  I saw there was an update to Home Assistant Core 2026.5.4 and as usual I clicked on the update button. Some time passes, Home Assistant goes offline... and when it comes back online, I'm still apparently on 2026.5.3, with an update available to 2026.5.4 - I have repeated the upd…

• Mention NODE-RED never opens - how to fix? · Reddit · 2026-05-28

  Hi, I'm running Home Assistant Green. I have Node red version 21.0.10 installed. I run Installation method Home Assistant OS Core 2026.5.4 Supervisor 2026.05.1 Operating System 17.3 Frontend 20260429.4 Companion app 2026.4.4-full (21576) When ever I try to run node red, I get th…

• Mention Home Assistant Core seems not so "core" - how do you decide when to upgrade? · Reddit · 2026-05-25

  I see the notification that Home Assistant Core version 2026.5.4 is out. I wonder if I should upgrade from the version I have installed. I go look at the full list of changes. Oh my goodness, there's 1436 changes in 2026.5. As I scan the list, nearly all of them are for specific…

Reports are found automatically and labelled by an AI model plus keyword rules — they can be wrong. Open the post to judge for yourself.

← Home Assistant 2026.5.3 · Home Assistant 2026.6.0 →

Other Home Assistant versions

• 2026.10.2 2026-10-16
• 2026.10.1 2026-10-10
• 2026.10.0 2026-10-07
• 2026.9.4 2026-09-27
• 2026.9.3 2026-09-18
• 2026.9.2 2026-09-11
• 2026.9.1 2026-09-05
• 2026.9.0 2026-09-02