CVE-2026-55997 — Long-lived Rancher registration token exposed in plaintext
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…
Published: 2026-08-05 · CVSS: 8.8 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7