CVE-2026-40304

MEDIUM

5.3

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.

Details CVE

Score CVSS v3.15.3

SeveriteMEDIUM

Vecteur CVSSCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Vecteur d'attaqueNETWORK

ComplexiteHIGH

Privileges requisLOW

Interaction utilisateurNONE

Publie4/17/2026

Derniere modification4/20/2026

Sourcenvd

Observations honeypot0

Faiblesses (CWE)

CWE-284CWE-863

References

https://github.com/openziti/zrok/releases/tag/v2.0.1(security-advisories@github.com)

https://github.com/openziti/zrok/security/advisories/GHSA-3jpj-v3xr-5h6g(security-advisories@github.com)

Correlations IOC

Aucune correlation enregistree

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