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CVE-2026-75036

4.3 · MEDIUM

A security vulnerability was discovered in Fleet's Helm template preprocessing where templates evaluated by the Fleet controller could reach network resources outside the management cluster.

Published Sep 3, 2026suseCWE-918EPSS 0.16%

Overview

CVE-2026-75036 is a medium-severity vulnerability affecting suse rancher_fleet. It was published on September 3, 2026 and has a CVSS 3.1 base score of 4.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

A security vulnerability was discovered in Fleet's Helm template preprocessing where templates evaluated by the Fleet controller could reach network resources outside the management cluster. A user who can supply bundle content to a repository referenced by a `GitRepo` resource can cause the Fleet controller to:

- Disclose cluster metadata available to the templating context.

- Reveal information about hosts reachable from the controller's network position.

Because the disclosure channel is name resolution, it may remain effective in environments where outbound traffic is otherwise restricted. The disclosed information is limited to values exposed to the Fleet templating context and to name resolution results. Integrity and availability of managed clusters are not affected.

This issue affects Fleet:

from 0.12.0 before 0.12.19,

from 0.13.0 before 0.13.15,

from 0.14.0 before 0.14.10,

from 0.15.0 before 0.15.6, and

from 0.16.0 before 0.16.1.

Remediation

Check the references section for vendor advisories and patches from suse. Update rancher_fleet to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
suserancher_fleet>= 0.12.0, < 0.12.19Affected

References

GitHubgithub.com/rancher/fleet/security/advisories/GHSA-x9m6-xcjr-hpjp

How CyberStrike helps

Frequently asked questions

What is CVE-2026-75036?

CVE-2026-75036 is a medium-severity vulnerability affecting suse rancher_fleet. It was published on September 3, 2026 and has a CVSS 3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2026-75036?

This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-75036?

Check the references section for vendor advisories and patches from suse. Update rancher_fleet to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-75036?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-75036 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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