A vulnerability has been identified within Rancher where a user with the ability to create a project, on a certain cluster, can create a project with the same name as an existing project in a different cluster. This results in the user gaining access to the other project in the different cluster, resulting in a privilege escalation. This happens because the namespace used on the local cluster to store related resources (PRTBs and secrets) is the name of the project.
https://github.com/rancher/rancher/security/advisories/GHSA-8h6m-wv39-239m
Published: 2026-10-15
Updated: 2026-10-16
Named Vulnerability: GO-2025-3647Named Vulnerability: GHSA-8h6m-wv39-239m
Base Score: 7.1
Vector: CVSS2#AV:N/AC:H/Au:S/C:C/I:C/A:C
Severity: High
Base Score: 8.5
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Severity: High
EPSS: 0.00435