CVE-2026-40304
5.3
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Exploitability: 1.6 / Impact: 3.6
Source: security-advisories@github.com (Secondary)
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 (1)
Products: Netfoundry: Zrok
Configuration A
| Vulnerable Software | Affected Versions |
|---|---|
| Before 2.0.1 |
Related CWEs
CWE-284
Improper Access Control
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
CWE-863
Incorrect Authorization
The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.
References (2)
Source: security-advisories@github.com
Release Notes
Source: security-advisories@github.com
Vendor Advisory
Timeline
No history available yet.