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7.0 High

CVE-2026-44949 A Rancher FleetWorkspace admission path allowed side effects to occur in the Rancher webhook handler for versions 0.7.0…

Description

A Rancher FleetWorkspace admission path allowed side effects to occur in the Rancher webhook handler for versions 0.7.0 up to 0.7.10, 0.8.0 up to 0.8.7, 0.9.0 up to 0.9.6 and 0.10.0 up to 0.10.7. An unauthenticated attacker with network access to the in-cluster rancher-webhook service could submit a crafted admission payload and cause workspace-related Kubernetes objects to be created with attacker-chosen identity data.

Affected products and versions

Product Affected versions Fixed in
Rancher 0.10 0.10.0 → < 0.10.7 0.10.7
Rancher 0.9 0.9.0 → < 0.9.6 0.9.6
Rancher 0.8 0.8.0 → < 0.8.7 0.8.7
Rancher 0.7 0.7.0 → < 0.7.10 0.7.10

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