CVE-2026-75033CWE-639

CVE-2026-75033

High · published September 3, 2026

CVSS v3.1
7.7
EPSS
0%
Percentile
26.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.7 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00340 · 26.3th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2026-09-03T19:17Z
Affected products (1)
ProductVersionsFixed in
suse/rancher< 2.15.12.15.1
References (1)
https://github.com/rancher/rancher/releases/tag/v2.15.1 · [email protected]
EPSS history
Timeline
  • 05 SEP 03:44Z
    EPSS moved — → 0%
    epss
  • 03 SEP 14:57Z
    Rancher: Cross-Cluster Secret Leakage via Namespace projectId Annotation Spoofing
    cvelistv5