CVE-2018-1002105
CVSS v3
9.8
CRITICAL
EPSS Score
87.0 %
exploit probability, as of 2026-10-04
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
In all Kubernetes versions prior to v1.10.11, v1.11.5, and v1.12.3, incorrect handling of error responses to proxied upgrade requests in the kube-apiserver allowed specially crafted requests to establish a connection through the Kubernetes API server to backend servers, then send arbitrary requests over the same connection directly to the backend, authenticated with the Kubernetes API server's TLS credentials used to establish the backend connection.
Frequently asked questions
What is CVE-2018-1002105?
In all Kubernetes versions prior to v1.10.11, v1.11.5, and v1.12.3, incorrect handling of error responses to proxied upgrade requests in the kube-apiserver allowed specially crafted requests to establish a connection through the Kubernetes API server to backend servers, then send arbitrary requests over the same connection directly to the backend, authenticated with the Kubernetes API server's TLS credentials used to establish the backend connection.
Is CVE-2018-1002105 actively exploited?
Active exploitation of CVE-2018-1002105 has not been confirmed. Its EPSS score was 87.0% on 2026-10-04, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2018-1002105?
CVE-2018-1002105 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2018-1002105 affecting your environment?
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