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.
{
"cna_assigner": "suse",
"cwe_ids": [
"CWE-312"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55997.json"
}{
"extracted_events": [
{
"range": [
{
"introduced": "2.14.0"
},
{
"fixed": "2.14.4"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"introduced": "2.13.0"
},
{
"fixed": "2.13.8"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
}
]
}