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OpenAdvisories
Critical · 9.4 CVE-2026-44939 EUVD-2026-38009GHSA-mhc6-2gfq-xx62GO-2026-5875

Command injection through unsanitized YAML parameter in Rancher

Published Jun 19, 2026 · Updated Nov 3, 2026 · Assigned by suse

Description

A command injection vulnerability in the Rancher Manager cluster before 2.14.2 import endpoint /v3/import/{token}_{clusterId}.yaml through unsanitized YAML parameters could allow remote attackers to break out of an image, and execute e.g. malicious containers.

Affected products

VendorProductAffectedFixed
SUSE Rancher 2.14.0 – < 2.14.2, 2.13.0 – < 2.13.6, 2.12.0 – < 2.12.10, 2.11.0 – < 2.11.14, 2.10.0 – < 2.10.12 2.14.2

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
openSUSE Leap 16.0 govulncheck-vulndb 0.0.20260723T184607-160000.1.1 openSUSE-SU-2026:21483-1

Affected packages

EcosystemPackageAffectedFixedRecord
Go github.com/rancher/rancher >= 2.14.0, < 2.14.2 2.14.2 GHSA-mhc6-2gfq-xx62
Go github.com/rancher/rancher >= 2.13.0, < 2.13.6 2.13.6 GHSA-mhc6-2gfq-xx62
Go github.com/rancher/rancher >= 2.12.0, < 2.12.10 2.12.10 GHSA-mhc6-2gfq-xx62
Go github.com/rancher/rancher >= 2.11.0, < 2.11.14 2.11.14 GHSA-mhc6-2gfq-xx62
Go github.com/rancher/rancher >= 2.10.0, < 2.10.12 2.10.12 GHSA-mhc6-2gfq-xx62
Go github.com/rancher/rancher < 0.0.0-20260617231817-2aa77eb283e7 0.0.0-20260617231817-2aa77eb283e7 GHSA-mhc6-2gfq-xx62

Advisories 2

References