CVE-2026-75033 — Rancher: Cross-Cluster Secret Leakage via Namespace projectId Annotation Spoofing
A flaw was found in Rancher Manager. Project Secrets were propagated into a namespace based only on its `field.cattle.io/projectId` annotation, without verifying that the refere…
Published: 2026-09-03 · CVSS: 7.7 · CVSS 3.1
A flaw was found in Rancher Manager. Project Secrets were propagated into a namespace based only on its `field.cattle.io/projectId` annotation, without verifying that the referenced project belonged to the same downstream cluster. A user able to create namespaces on one cluster could set the annotation to a project ID from another cluster and have that project's secrets copied into a namespace under their control. This issue affects Rancher: before 2.15.1.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7