GHSA-3jpj-v3xr-5h6g
Suggest an improvement- Source
- https://github.com/advisories/GHSA-3jpj-v3xr-5h6g
- Import Source
- https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-3jpj-v3xr-5h6g/GHSA-3jpj-v3xr-5h6g.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/GHSA-3jpj-v3xr-5h6g
- Aliases
- Published
- 2026-04-16T21:09:23Z
- Modified
- 2026-06-25T18:56:34Z
- Severity
-
- 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- zrok: Broken ownership check in DELETE /api/v2/unaccess allows non-admin to delete global frontend records
- Details
-
Summary 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.
Attack Vector: Network — the endpoint is a standard HTTP API call.
Attack Complexity: High — successful exploitation requires prior knowledge of a global frontend token. These tokens are not returned to non-admin users by any standard API endpoint; obtaining one requires an out-of-band step (e.g., leaked server logs, admin documentation for a self-hosted instance, or social engineering).
Privileges Required: Low — a valid user account with at least one registered environment is required; no admin privileges needed.
User Interaction: None.
Scope: Unchanged — the impact stays within the same server instance.
Confidentiality Impact: None — no data is disclosed.
Integrity Impact: None — no data is improperly modified; the record is deleted (not corrupted).
Availability Impact: High — deleting a global frontend disrupts every public share routed through it on the instance, constituting a platform-wide availability impact.
Affected Component controller/unaccess.go — unaccessHandler.Handle (line 56)
- Database specific
{ "cwe_ids": [ "CWE-284", "CWE-863" ], "github_reviewed": true, "github_reviewed_at": "2026-04-16T21:09:23Z", "nvd_published_at": "2026-04-17T22:16:32Z", "severity": "MODERATE" }- References
Affected packages
Go / github.com/openziti/zrok
Package
- Name
- github.com/openziti/zrok
- View open source insights on deps.dev
- Purl
- pkg:golang/github.com/openziti/zrok
Go / github.com/openziti/zrok/v2
Package
- Name
- github.com/openziti/zrok/v2
- View open source insights on deps.dev
- Purl
- pkg:golang/github.com/openziti/zrok/v2