CVE-2026-55997
Long-lived Rancher registration token exposed in plaintext
- State
- Published
- Severity
- 8.8 High
- Published
- Aug 5, 2026
- Updated
- Aug 6, 2026
- Reserved
- Jun 18, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.8 High | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H | suse |
Weaknesses
- CWE-312 Cleartext storage of sensitive information
Affected Products
| Product | Versions |
|---|---|
rancherrancher |
|
References
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