Rancher issues long-lived registration tokens to authenticate nodes and agents joining a downstream cluster. These tokens were stored and exposed in plaintext with no expiration, so a malicious user could obtain one either through the Rancher API, etcd, stored automation, or direct file access on a node, and could use it at any time to register a rogue node into the cluster.
History

Wed, 05 Aug 2026 09:45:00 +0000

Type Values Removed Values Added
First Time appeared Rancher
Rancher rancher
Vendors & Products Rancher
Rancher rancher

Wed, 05 Aug 2026 08:15:00 +0000

Type Values Removed Values Added
Description Rancher issues long-lived registration tokens to authenticate nodes and agents joining a downstream cluster. These tokens were stored and exposed in plaintext with no expiration, so a malicious user could obtain one either through the Rancher API, etcd, stored automation, or direct file access on a node, and could use it at any time to register a rogue node into the cluster.
Title Long-lived Rancher registration token exposed in plaintext
Weaknesses CWE-312
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: suse

Published:

Updated: 2026-08-05T13:08:17.091Z

Reserved: 2026-06-18T09:26:55.987Z

Link: CVE-2026-55997

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-05T09:30:11Z