CVE-2026-25705 json
Rancher Extensions have arbitrary file access via path traversal
published 6mo ago modified 14d ago also GHSA-5v3h-x4wf-5c35 , GO-2026-5154 , EUVD-2026-29915
- cvss
- 8.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 30%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- go github.com/rancher/rancher 2.11.13, 2.12.9, 2.13.5, 2.14.1
- SUSE rancher 2.11.13, 2.12.9, 2.13.5, 2.14.1
- govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
opensuse advisories openSUSE-SU-2026:21483-1
Is CVE-2026-25705 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 5mo ago
Exploit prediction
0.37% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.4 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H |
| GitHub | 3.1 | 8.4 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/rancher/rancher | >=2.14.0, <2.14.1 >=2.13.0, <2.13.5 >=2.12.0, <2.12.9 >=2.10.11, <2.11.13 all versions |
2.14.1 2.13.5 2.12.9 2.11.13 |
Affected products
- SUSE rancher
Classification
- Weakness
-
- CWE-35 Path Traversal: '.../...//'
References
Sources
- CVE List CVE-2026-25705
- GitHub Advisory GHSA-5v3h-x4wf-5c35
- NVD CVE-2026-25705
- OSV GO-2026-5154
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