CVE-2026-40304
MEDIUM
MEDIUM
Priority: 0.02
BB Relevance:
51/100
Published: 2026-04-17
Modified: 2026-10-26
First seen: 2026-10-29
Status: active
Attack Surface
Network
No Interaction
CVSS Vector Breakdown
AV:
Network
AC:
High
PR:
Low
UI:
None
S:
Unchanged
C:
None
I:
None
A:
High
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.
Affected Software (1)
| Vendor | Product | Version |
|---|---|---|
| netfoundry | zrok | < 2.0.1 |
References & Advisories (2)
Vendor Advisory
Release Notes