SUSE Rancher up to 0.12.14/0.13.10/0.14.5/0.15.1 Fleet fleet.yaml namespaceLabels information disclosure

Summaryinfo

A vulnerability marked as problematic has been reported in SUSE Rancher up to 0.12.14/0.13.10/0.14.5/0.15.1. Affected is an unknown function of the file fleet.yaml of the component Fleet. This manipulation of the argument namespaceLabels causes information disclosure. The identification of this vulnerability is CVE-2026-44938. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in SUSE Rancher up to 0.12.14/0.13.10/0.14.5/0.15.1. It has been declared as problematic. Affected by this vulnerability is an unknown code of the file fleet.yaml of the component Fleet. The manipulation of the argument namespaceLabels with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. The summary by CVE is:

A vulnerability has been identified in Fleet's agent-side deployer, which did not filter security-sensitive keys from namespaceLabels in fleet.yaml (or BundleDeployment.spec.options.namespaceLabels) when applying them to the target namespace. An attacker with git push access to a Fleet-monitored repository could overwrite Pod Security Standards (PSS) enforcement labels on a target namespace. This allows the attacker to weaken admission controls and deploy workloads that PSS policies would otherwise block.

It is possible to read the advisory at bugzilla.suse.com. This vulnerability is known as CVE-2026-44938 since 05/08/2026. The exploitation appears to be easy. The attack can be launched remotely. Additional levels of successful authentication are needed for exploitation. 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 07/07/2026). The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

Upgrading to version 0.12.15, 0.13.11, 0.14.6 or 0.15.2 eliminates this vulnerability.

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Productinfo

Vendor

• SUSE

Name

• Rancher

Version

• 0.12.0
• 0.12.1
• 0.12.2
• 0.12.3
• 0.12.4
• 0.12.5
• 0.12.6
• 0.12.7
• 0.12.8
• 0.12.9
• 0.12.10
• 0.12.11
• 0.12.12
• 0.12.13
• 0.12.14
• 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
• 0.14.0
• 0.14.1
• 0.14.2
• 0.14.3
• 0.14.4
• 0.14.5
• 0.15.0
• 0.15.1

License

• open-source

Website

• Vendor: https://www.suse.com/

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