SUSE Rancher up to 0.13.15/0.14.10/0.15.6/0.16.1 Fleet namespaceLabels/namespaceAnnotations improper authorization

Summaryinfo

A vulnerability, which was classified as problematic, has been found in SUSE Rancher up to 0.13.15/0.14.10/0.15.6/0.16.1. This affects an unknown part of the component Fleet. The manipulation of the argument namespaceLabels/namespaceAnnotations leads to improper authorization. This vulnerability is listed as CVE-2026-93540. The attack may be initiated remotely. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in SUSE Rancher up to 0.13.15/0.14.10/0.15.6/0.16.1. It has been rated as problematic. This issue affects an unknown functionality of the component Fleet. The manipulation of the argument namespaceLabels/namespaceAnnotations with an unknown input leads to a improper authorization vulnerability. Using CWE to declare the problem leads to CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. Impacted is integrity. The summary by CVE is:

A privilege mismatch was found in Fleet. When a bundle requested namespace labels or annotations through the namespaceLabels and namespaceAnnotations options, the resulting namespace metadata update was not subject to the same authorization as the rest of the bundle's deployment. As a result, a bundle could change labels and annotations on a target namespace even when the identity it was pinned to was not authorized to modify that namespace. This affected SUSE Rancher Fleet 0.16 before 0.16.2, 0.15 before 0.15.7, 0.14 before 0.14.11, 0.13 before 0.13.16 and potentially older versions.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-93540 since 09/18/2026. The exploitation is known to be easy. The attack may be initiated remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/28/2026). The attack technique deployed by this issue is T1548.002 according to MITRE ATT&CK.

Upgrading to version 0.13.16, 0.14.11, 0.15.7 or 0.16.1 eliminates this vulnerability.

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Productinfo

Vendor

• SUSE

Name

• Rancher

Version

• 0.13.0
• 0.13.1
• 0.13.2
• 0.13.3
• 0.13.4
• 0.13.5
• 0.13.6
• 0.13.7
• 0.13.8
• 0.13.9
• 0.13.10
• 0.13.11
• 0.13.12
• 0.13.13
• 0.13.14
• 0.13.15
• 0.14.0
• 0.14.1
• 0.14.2
• 0.14.3
• 0.14.4
• 0.14.5
• 0.14.6
• 0.14.7
• 0.14.8
• 0.14.9
• 0.14.10
• 0.15.0
• 0.15.1
• 0.15.2
• 0.15.3
• 0.15.4
• 0.15.5
• 0.15.6
• 0.16.0
• 0.16.1

License

• open-source

Website

• Vendor: https://www.suse.com/

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