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CVE-2026-25705GHSA-5V3H-X4WF-5C35GO-2026-5154

Rancher Extensions have arbitrary file access via path traversal

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 2.14.1, 2.13.5, 2.12.9, 2.11.13
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

A vulnerability has been identified in Rancher's 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.

Timeline

  1. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  2. CVE published
  3. Record last updated

Affected versions

  • github.com/rancher/rancher

    From 2.14.0 · fixed in 2.14.1; From 2.13.0 · fixed in 2.13.5; From 2.12.0 · fixed in 2.12.9; From 2.10.11 · fixed in 2.11.13

  • github.com/rancher/rancherGo

    From 2.14.0 · fixed in 2.14.1

  • github.com/rancher/rancherGo

    From 2.13.0 · fixed in 2.13.5

  • github.com/rancher/rancherGo

    From 2.12.0 · fixed in 2.12.9

  • github.com/rancher/rancherGo

    From 2.10.11 · fixed in 2.11.13

  • github.com/rancher/rancherGo

    All versions

References 2

bugzilla.suse.com

GitHub · rancher/rancher