CVE-2026-28806
Improper authorization in device bulk actions and device update API allows cross-organization device control
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 manipulating device identifiers and perform management actions on them, such as moving them to products they control. This may allow attackers to interfere with firmware updates, access device functionality exposed by the platform, or disrupt device connectivity. In environments where additional features such as remote console access are enabled, this could lead to full compromise of affected devices. This issue affects nerves_hub: from 1.0.0 before 2.4.0.
Fixes and workarounds
Fix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: EEFAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| nerves_hub_web nerves-hub nerves_hub
otp |
≥ 1.0.0; < 2.4.0 (affected, semver)
Other versions: unaffected |
CNA: EEF |
| nerves_hub_web nerves-hub nerves-hub/nerves-hub
oci |
≥ 1.0.0; < 2.4.0 (affected, other)
Other versions: unaffected |
CNA: EEF |
| nerves_hub_web nerves-hub nerves-hub/nerves_hub_web
github |
≥ adaeefdb7a835525482588f43332ef988cc448c7; < * (affected, git) ≥ 79743ef08f7f801617b653fd09f37c01ed9b4be0; < 1f69c9d595684a4650c3ac702f3dc7c5bcd7526c (affected, git) Other versions: unaffected |
CNA: EEF |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 9.4 critical |
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H | CNA: EEF |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/nerves-hub/nerves_hub_web/security/advisories/GHSA-f8fr-mccc-xvcxCNA: EEF · vendor-advisory, related
- https://cna.erlef.org/cves/CVE-2026-28806.htmlCNA: EEF · related
- https://osv.dev/vulnerability/EEF-CVE-2026-28806CNA: EEF · related
- https://github.com/nerves-hub/nerves_hub_web/commit/adaeefdb7a835525482588f43332ef988cc448c7CNA: EEF · related
- https://github.com/nerves-hub/nerves_hub_web/commit/79743ef08f7f801617b653fd09f37c01ed9b4be0CNA: EEF · related
- https://github.com/nerves-hub/nerves_hub_web/commit/1f69c9d595684a4650c3ac702f3dc7c5bcd7526cCNA: EEF · patch
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