CVE-2026-25705: Suse Rancher

High severity, CVSS 8.4. EPSS: 0.5% chance of exploitation in the next 30 days.

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.

Affected products

• Suse Rancher: from 2.14.0, before 2.14.1 (fixed in 2.14.1); from 2.13.0, before 2.13.5 (fixed in 2.13.5); from 2.12.0, before 2.12.9 (fixed in 2.12.9); from 2.10.11, before 2.11.13 (fixed in 2.11.13)

Published 2026-05-13. Last modified 2026-06-17.