Cross-cluster Secret Exposure in Rancher Manager by Rancher
CVE-2026-75033

7.7HIGH

Key Information:

Vendor

Suse
Status
Rancher
Vendor
CVE Published:
3 September 2026

What is CVE-2026-75033?

A vulnerability in Rancher Manager enables the propagation of Project Secrets into namespaces solely based on the field.cattle.io/projectId annotation. This flaw allows a user with the ability to create namespaces in one cluster to exploit the annotation, referencing a project ID from a different cluster. Consequently, the secrets associated with the other project can be copied into the namespace controlled by the user, posing significant security risks.

Affected Version(s)

Rancher 0 < 2.15.1

References

https://github.com/rancher/rancher/releases/tag/v2.15.1

CVSS V3.1

Score:
7.7
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Alex Seymour
.