CVE-2026-33045: Home Assistant is open source home automation software that puts local control and privacy first

Routine

MEDIUM 5.4UPGRADE

CVE-2026-33045 is a medium-severity flaw (CVSS 5.4) affecting home-assistant. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Home Assistant is open source home automation software that puts local control and privacy first. Starting in version 2025.02 and prior to version 2026.01 the "remaining charge time"-sensor for mobile phones (imported/included from Android Auto it appears) is vulnerable cross-site scripting, similar to CVE-2025-62172. Version 2026.01 fixes the issue.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.2% (top 89%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-03-27
Last modified	2026-10-26

Publisher (CNA): GitHub, Inc. · Vendor: home-assistant

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-27 20:16 UTCPublished CVE record published
2026-10-26 00:10 UTCUpdated Record last modified

home-assistant home-assistant UPGRADE

Affected: >= 2025.2.0 and < 2026.1.0

Fixed in: 2026.1.0

Safe to downgrade to: a release before 2025.2.0

1. Check installed version

apt-cache policy home-assistant || rpm -q home-assistant || home-assistant --version

2. UPGRADE to 2026.1.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade home-assistant

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade home-assistant

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 2025.2.0 (Debian / Ubuntu)

apt-cache madison home-assistant sudo apt install home-assistant=<VERSION_BEFORE_2025.2.0> sudo apt-mark hold home-assistant

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list home-assistant sudo dnf downgrade home-assistant-<VERSION_BEFORE_2025.2.0> sudo dnf versionlock add home-assistant

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-33045?

home-assistant: upgrade to 2026.1.0. Exact commands for each OS are on this page.

Is CVE-2026-33045 being exploited?

CVE-2026-33045 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-33045 affect?

CVE-2026-33045 affects home-assistant. Severity is medium (CVSS 5.4). Home Assistant is open source home automation software that puts local control and privacy first. Starting in version 2025.02 and prior to version 2026.01 the "remaining charge time"-sensor for mobile phones (imported/included from Android

How urgent is CVE-2026-33045?

Priority 27/100. Public exploit reference

Software pages

Android vulnerabilities · Home Assistant vulnerabilities

Related CVEs

CVE-2026-54317 HIGH 7.6 UPGRADE Home Assistant is open source home automation software that puts local control and privacy first

References

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