Description
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.
Analysis
No analysis available yet.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| openziti | zrok | affected |
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Remediation
No remediation available yet.
Tracking
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Advisories
| Source | ID | Title |
|---|---|---|
 Github GHSA |
GHSA-3jpj-v3xr-5h6g | zrok: Broken ownership check in DELETE /api/v2/unaccess allows non-admin to delete global frontend records |
References
History
Fri, 17 Apr 2026 21:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | zrok's broken ownership check in DELETE /api/v2/unaccess allows non-admin to delete global frontend records | |
| Weaknesses | CWE-284 CWE-863 |
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| References |
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| Metrics |
cvssV3_1
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Subscriptions
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-04-17T21:04:23.648Z
Reserved: 2026-04-10T21:41:54.504Z
Link: CVE-2026-40304
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-04-17T22:16:32.230
Modified: 2026-04-17T22:16:32.230
Link: CVE-2026-40304
Redhat
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OpenCVE Enrichment
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