CVE-2026-25705 - Rancher Extensions have arbitrary file access via path traversal

CVE-2026-25705 - Rancher Extensions have arbitrary file access via path traversal

https://cvefeed.io/rssfeed/latest.atom / Wed, 05/13/2026 - 14:23
CVE ID :CVE-2026-25705
Published : May 13, 2026, 8 a.m. | 3 hours, 5 minutes ago
Description :A vulnerability has been identified in [Rancher's Extensions](https://ranchermanager.docs.rancher.com/integrations-in-rancher/rancher-extensions) where malicious code can be injected in Rancher through a path traversal in the `compressedEndpoint` field inside a `UIPlugin` deployment. A malicious UI extension could abuse that to: * Overwrite Rancher binaries or configuration to inject code. * Write to /var/lib/rancher/ to tamper with cluster state. * If hostPath volumes are mounted, write to the host node filesystem. * Use this issue to chain with other attack vectors.
Severity: 8.4 | HIGH
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