What is CVE-2026-75033?

CVE-2026-75033 is a high-severity vulnerability, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.7/10. Published 2026-09-03.

How severe is CVE-2026-75033?

High severity. CVSS v3 base score is 7.7 out of 10.

CVE-2026-75033

CVE-2026-75033

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.

Vulnerability class: IDOR (Insecure Direct Object Reference)

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N.

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

meissner@suse.de

Frequently asked questions

What is CVE-2026-75033?: CVE-2026-75033 is a high-severity vulnerability, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.7/10. Published 2026-09-03.
How severe is CVE-2026-75033?: High severity. CVSS v3 base score is 7.7 out of 10.