CVE-2026-55998

The record

The endpoint /v3/import/{token}_{clusterId}.yaml retrieves the cluster object before validating the token. When a valid cluster ID references a cluster that has private registry secrets configured, a nil pointer dereference in pkg/systemtemplate/private_registry.go causes the request to return HTTP 502 Bad Gateway. For cluster IDs that do not exist, the endpoint returns HTTP 200. This observable difference in response codes constitutes a reliable enumeration oracle.

Affected packages

Related vulnerabilities

• CVE-2026-89173 Smart Video Intercom System developed by Kingdom Communication Associated has a Sensitive… CWE-204
• CVE-2026-9161 Observable response discrepancy vulnerability in DernekPlus Website Template allows… CWE-204
• CVE-2026-19205 Observable response discrepancy vulnerability in GastroMenum GastroMenum Web Panel allows… CWE-204
• CVE-2026-19080 Observable response discrepancy vulnerability in Menulux Software Inc. CWE-204
• CVE-2026-78584 Observable Response Discrepancy (CWE-204) in the Kibana Osquery feature can lead to… CWE-204
• CVE-2026-84307 Filament is a collection of full-stack components for accelerated Laravel development. CWE-204
• CVE-2026-66002 Frappe is a full-stack web application framework. CWE-204
• CVE-2026-54739 Lemmy is a link aggregator and forum for the fediverse. CWE-204