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TI-2026-20779 Aliases CVE-2026-25705GHSA-5v3h-x4wf-5c35

Rancher Extensions have arbitrary file access via path traversal

Priority LOW 39CWE-35Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00369 30th percentileScored 2026-11-07
Fix Fixed rancher (SUSE): 2.14.1, 2.13.5, 2.12.9 +1github.com/rancher/rancher (Go): 2.14.1, 2.13.5, 2.12.9 +1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
SUSErancher2.14.0 to before 2.14.1; 2.13.0 to before 2.13.5; 2.12.0 to before 2.12.9; 2.10.11 to before 2.11.132.14.1, 2.13.5, 2.12.9, 2.11.13Patch availableCNA
—github.com/rancher/rancher (Go)2.14.0 to before 2.14.12.14.1Patch availableGHSA-5v3h-x4wf-5c35
—github.com/rancher/rancher (Go)2.13.0 to before 2.13.52.13.5Patch availableGHSA-5v3h-x4wf-5c35
—github.com/rancher/rancher (Go)2.12.0 to before 2.12.92.12.9Patch availableGHSA-5v3h-x4wf-5c35
—github.com/rancher/rancher (Go)2.10.11 to before 2.11.132.11.13Patch availableGHSA-5v3h-x4wf-5c35
  • rancher VendorSUSE Affected 2.14.0 to before 2.14.1; 2.13.0 to before 2.13.5; 2.12.0 to before 2.12.9; 2.10.11 to before 2.11.13 Fixed in 2.14.1, 2.13.5, 2.12.9, 2.11.13 Patch available CNA
  • github.com/rancher/rancher (Go) Vendor— Affected 2.14.0 to before 2.14.1 Fixed in 2.14.1 Patch available GHSA-5v3h-x4wf-5c35
  • github.com/rancher/rancher (Go) Vendor— Affected 2.13.0 to before 2.13.5 Fixed in 2.13.5 Patch available GHSA-5v3h-x4wf-5c35
  • github.com/rancher/rancher (Go) Vendor— Affected 2.12.0 to before 2.12.9 Fixed in 2.12.9 Patch available GHSA-5v3h-x4wf-5c35
  • github.com/rancher/rancher (Go) Vendor— Affected 2.10.11 to before 2.11.13 Fixed in 2.11.13 Patch available GHSA-5v3h-x4wf-5c35

Remediation

  • Fix · CNA rancher (SUSE) Fixed in 2.14.1, 2.13.5, 2.12.9, 2.11.13
  • Fix · GHSA-5v3h-x4wf-5c35 github.com/rancher/rancher (Go) Fixed in 2.14.1 Advisory →
  • Fix · GHSA-5v3h-x4wf-5c35 github.com/rancher/rancher (Go) Fixed in 2.13.5 Advisory →
  • Fix · GHSA-5v3h-x4wf-5c35 github.com/rancher/rancher (Go) Fixed in 2.12.9 Advisory →
  • Fix · GHSA-5v3h-x4wf-5c35 github.com/rancher/rancher (Go) Fixed in 2.11.13 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-25705
  2. 2026-10-03 Alias added: GHSA-5v3h-x4wf-5c35

References

Advisory 1

Other 3

  • TI-2016-03560 Unspecified vulnerability in Adobe Flash Player 21.0.0.242 and earlier allows remote… KEVCVSS 3.1CRITICAL 9.8
  • TI-2016-03506 Adobe Flash Player 21.0.0.226 and earlier allows remote attackers to execute arbitrary… KEVCVSS 3.1CRITICAL 9.8
  • TI-2016-02888 Unspecified vulnerability in Oracle Java SE 6u113, 7u99, and 8u77; Java SE Embedded 8u77… KEVCVSS 3.1CRITICAL 9.8
  • TI-2015-04302 Use-after-free vulnerability in the BitmapData class in the ActionScript 3 (AS3)… KEVCVSS 3.1CRITICAL 9.8
  • TI-2015-04301 Use-after-free vulnerability in the DisplayObject class in the ActionScript 3 (AS3)… KEVCVSS 3.1CRITICAL 9.8
  • TI-2015-04298 Use-after-free vulnerability in the ByteArray class in the ActionScript 3 (AS3)… KEVCVSS 3.1CRITICAL 9.8
See all 1331 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences