CVE-2026-40304 (GCVE-0-2026-40304)

Vulnerability from cvelistv5 – Published: 2026-04-17 21:04 – Updated: 2026-04-20 14:57
VLAI
Title
zrok's broken ownership check in DELETE /api/v2/unaccess allows non-admin to delete global frontend records
Summary
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.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-20 14:51 UTC
CWE
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7775 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
openziti zrok Affected: < 2.0.1
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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