CVE-2026-28806: Improper Authorization vulnerability in nerves-hub nerves_hub_web allows cross-organization device control via

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HIGH 8.8UPGRADE

CVE-2026-28806 is a high-severity flaw (CVSS 8.8) affecting nerveshub. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper Authorization vulnerability in nerves-hub nerves_hub_web allows cross-organization device control via device bulk actions and device update API. Missing authorization checks in the device bulk actions and device update API endpoints allow authenticated users to target devices belonging to other organizations and perform actions outside of their privilege level. An attacker can select devices outside of their organization by manipulatin

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 63%)
CISA exploited list	No
Weakness	CWE-285, CWE-668
Published	2026-03-10
Last modified	2026-06-17

Publisher (CNA): EEF · Vendor: nerves-hub

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-10 22:16 UTCPublished CVE record published
2026-06-17 10:29 UTCUpdated Record last modified

nerves-hub nerveshub UPGRADE

Affected: >= 1.0.0 and < 2.4.0

Fixed in: 2.4.0

Safe to downgrade to: a release before 1.0.0

1. Check installed version

apt-cache policy nerveshub || rpm -q nerveshub || nerveshub --version

2. UPGRADE to 2.4.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade nerveshub

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade nerveshub

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 1.0.0 (Debian / Ubuntu)

apt-cache madison nerveshub sudo apt install nerveshub=<VERSION_BEFORE_1.0.0> sudo apt-mark hold nerveshub

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

dnf --showduplicates list nerveshub sudo dnf downgrade nerveshub-<VERSION_BEFORE_1.0.0> sudo dnf versionlock add nerveshub

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-2026-28806?

nerveshub: upgrade to 2.4.0. Exact commands for each OS are on this page.

Is CVE-2026-28806 being exploited?

CVE-2026-28806 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-2026-28806 affect?

CVE-2026-28806 affects nerveshub. Severity is high (CVSS 8.8). Improper Authorization vulnerability in nerves-hub nerves_hub_web allows cross-organization device control via device bulk actions and device update API. Missing authorization checks in the device bulk actions and device update API endpoin

How urgent is CVE-2026-28806?

Priority 40/100. High severity

Related CVEs

CVE-2025-64097 CRITICAL 9.8 UPGRADE NervesHub is a web service that allows users to manage over-the-air (OTA) firmware updates of devices in the f

References

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