CVE-2026-25705
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.
- CVSS 3.1
- 8.4
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H - EPSS
- 0.4% chance of exploitation in the next 30 days; higher than 30% of CVEs (scores of 2026-10-25)
- CWE
- CWE-35
- Published
- Modified
- Record from
- the NVD, synced
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-5v3h-x4wf-5c35 | Go | github.com/rancher/rancher | >=2.14.0 <2.14.1 | 2.14.1 |
| GHSA-5v3h-x4wf-5c35 | Go | github.com/rancher/rancher | >=2.13.0 <2.13.5 | 2.13.5 |
| GHSA-5v3h-x4wf-5c35 | Go | github.com/rancher/rancher | >=2.12.0 <2.12.9 | 2.12.9 |
| GHSA-5v3h-x4wf-5c35 | Go | github.com/rancher/rancher | >=2.10.11 <2.11.13 | 2.11.13 |
| GO-2026-5154 | Go | github.com/rancher/rancher | all versions | no fix published |