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CVE-2026-40304Published

zrok is software for sharing web services, files, and network resources. Prior to version 2.0.1, the unaccess handler (controller/unaccess.go) contains a logical error in its ownership guard: when a frontend record has environment_id = NULL…

Exact source revision recorded 27 Oct 2026 10:09:56 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

nvd · CVE-2026-40304

Published

zrok is software for sharing web services, files, and network resources. Prior to version 2.0.1, the unaccess handler (controller/unaccess.go) contains a logical error in its ownership guard: when a frontend record has environment_id = NULL (the marker for admin-created global frontends), the condition short-circuits to false and allows the deletion to proceed without any ownership verification. A non-admin user who knows a global frontend token can call DELETE /api/v2/unaccess with any of their own environment IDs and permanently delete the global frontend, taking down all public shares routed through it. Version 2.0.1 patches the issue.

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Analyzed

Weakness classifications: CWE-284 · CWE-863

Original publisher date fields

published: 2026-04-17T22:16:32.230

lastModified: 2026-10-26T22:10:00.163

1 source CPE criteria · context only
  • cpe:2.3:a:netfoundry:zrok:*:*:*:*:*:*:*:*

The original JSON retains the logical configuration operators, exclusions and version bounds.

Source published
17 Apr 2026 22:16:32 UTC
Source modified
26 Oct 2026 22:10:00 UTC
Observed here
27 Oct 2026 10:09:56 UTC
Source terms
NIST NVD usage terms; underlying source attribution retained

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: nvd · NIST NVD usage terms; underlying source attribution retained. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 3.1 · [email protected] · Secondary · 5.3 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

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Sources read 1 Nov 15:09 UTC · 275 of 275 readable · 272 fully read · documentation 469/469 current

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