CVE-2026-25705
Rancher Extensions have arbitrary file access via path traversal
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.
INFO
Published Date :
May 13, 2026, 8 a.m.
Last Modified :
May 13, 2026, 8:01 a.m.
Remotely Exploit :
Yes !
Source :
suse
Affected Products
The following products are affected by CVE-2026-25705
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 404e59f5-483d-4b8a-8e7a-e67604dd8afb |
Solution
- Update Rancher to the latest secure version.
- Review and restrict UI extension deployment permissions.
- Validate configurations for the `compressedEndpoint` field.
- Apply vendor-specific security patches.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-25705 vulnerability anywhere in the article.