# CVE-2026-120286: Missing authorization in device and deployment group page events allows view-role members to change devices and deployment groups

Status: published. Published: 2026-11-10. Updated: 2026-11-10.

Missing Authorization vulnerability in the device and deployment group pages in nerves-hub nerves_hub_web allows an authenticated organization member with the view role to change devices and deployment groups via LiveView events reserved for the manage role. The event handlers that add and delete device certificates, add and remove tags, overwrite or clear a device's manual location, remove a device from its deployment group, move matched devices into a deployment group or remove unmatched ones, import devices from a CSV, and start, retry or delete firmware delta builds carry out the change without calling authorized!/2, and the pages render the controls to every member.

A view member can add a certificate that lets whoever holds its key connect as the device, delete a certificate so the device can no longer authenticate with it, and change which deployment group, and so which firmware release, a device receives. Everything stays within the organizations the member belongs to.

This issue affects nerves_hub: from 1.0.0 before 2.5.3.

## Remediation

- fix: Upgrading does not remove a certificate that a view member already added. After upgrading, review each device's certificates and delete any you do not recognize. (source: CNA: EEF)
- workaround: No configuration closes the hole. Until the upgrade, give the view role only to people you would trust with the manage role on that organization's devices. (source: CNA: EEF)
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: EEF) — https://github.com/nerves-hub/nerves_hub_web/commit/34ea112472a460319c1e1dec8ad0ffc37df05ffe

## Affected products and versions

- nerves-hub / nerves_hub_web (nerves-hub/nerves-hub): ≥ 1.0.0; < 2.5.3 (affected, other). Source: CNA: EEF
- nerves-hub / nerves_hub_web (nerves_hub): ≥ 1.0.0; < 2.5.3 (affected, semver). Source: CNA: EEF
- nerves-hub / nerves_hub_web (nerves-hub/nerves_hub_web): ≥ 7b511764a468bb2c1f33945874faa86af2255c0c; < 34ea112472a460319c1e1dec8ad0ffc37df05ffe (affected, git). Source: CNA: EEF

## Severity and prioritization

- CVSS 4.0: 5.3 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:L/SA:N; source: CNA: EEF

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-862

## 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-gxj7-m8x6-r644 (CNA: EEF; vendor-advisory, related)

- https://cna.erlef.org/cves/CVE-2026-120286.html (CNA: EEF; related)

- https://osv.dev/vulnerability/EEF-CVE-2026-120286 (CNA: EEF; related)

- https://github.com/nerves-hub/nerves_hub_web/commit/7b511764a468bb2c1f33945874faa86af2255c0c (CNA: EEF; related)

- https://github.com/nerves-hub/nerves_hub_web/commit/34ea112472a460319c1e1dec8ad0ffc37df05ffe (CNA: EEF; patch)

## Provenance

- CNA: EEF: https://www.cve.org/CVERecord?id=CVE-2026-120286; retrieved 2026-11-10; source updated 2026-11-10

Revision: 4c2e360bf6e7e7642ec89cb93201ea26fd05ba077d3a38927df5e7ff0a6580c2

Canonical: https://y2.dev/cve/CVE-2026-120286

## Agent and API access

Public CVE pages, Markdown, and JSON are free to read without an account or API key.

- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

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