Summary
generated automatically from NVD dataCoreOS Tectonic 1.7.x before 1.7.9-tectonic.4 and 1.8.x before 1.8.4-tectonic.3 exposes a proxy to the Kubernetes cluster at /api/kubernetes/ that requires no authentication. An unauthenticated attacker can reach the Kubernetes API server and list all Namespaces through the Console, disclosing internal cluster state (CWE-200). That information could help enumerate namespaces and look for weak authorization policies to escalate privileges. The CVSS v3.1 score is 7.5 (HIGH).
NVD description
CoreOS Tectonic 1.7.x before 1.7.9-tectonic.4 and 1.8.x before 1.8.4-tectonic.3 mounts a direct proxy to the kubernetes cluster at /api/kubernetes/ which is accessible without authentication to Tectonic and allows an attacker to directly connect to the kubernetes API server. Unauthenticated users are able to list all Namespaces through the Console, resulting in an information disclosure. Tectonic's exposure of an unauthenticated API endpoint containing information regarding the internal state of the cluster can provide an attacker with information that may assist in other attacks against the cluster. For example, an attacker may not have the permissions required to list all namespaces in the cluster but can instead leverage this vulnerability to enumerate the namespaces and then begin to check each namespace for weak authorization policies that may allow further escalation of privileges.
EPSS · FIRST.org
1.7%probability of exploitation in the next 30 days
Higher than 76% of scored CVEs
EPSS (Exploit Prediction Scoring System) estimates, from observed exploitation activity, how likely a CVE is to be exploited in the next 30 days. It complements CVSS, which measures severity, not likelihood. Score of 2026-10-30, recomputed daily by FIRST.org.
CVSS v3.1 Score
Information
- Published
- 18 mai 2018
- Updated
- 17 juin 2026
- Status
- Modified
- Source
- cve@mitre.org
Affected products
Bounds published by NVD: "< 8.4.27" means 8.4.27 is no longer vulnerable. The fixed release to install is in the vendor advisory.
Weaknesses (CWE)
References (4)
- https://coreos.com/tectonic/releases/#1.8.4-tectonic.3Release NotesVendor Advisory
- https://coreos.com/tectonic/releases/#1.8.4-tectonic.3Release NotesVendor Advisory
Similar CVEs
Other vulnerabilities of type CWE-200
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