CVE-2026-75033

Rancher: Cross-Cluster Secret Leakage via Namespace projectId Annotation Spoofing

Published Sep 3, 2026 CVSS 3.1 · 7.7 High EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*
Type Values Removed Values Added
First Time appeared Suse
Suse rancher
Vendors & Products Suse
Suse rancher
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title Rancher: Cross-Cluster Secret Leakage via Namespace projectId Annotation Spoofing
Weaknesses CWE-639
References
Metrics cvssV3_1

{'score': 7.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
suse
Published
Updated
Sep 3, 2026, 3:13 PM
Reserved
Aug 17, 2026, 3:22 PM
Status
Analyzed
Published
Sep 3, 2026, 3:17 PM
Modified
Sep 18, 2026, 2:56 PM