The Kubernetes kube-controller-manager in versions v1.0-1.14, versions prior to v1.15.12, v1.16.9, v1.17.5, and version v1.18.0 are vulnerable to a Server Side Request Forgery (SSRF) that allows certain authorized users to leak up to 500 bytes of arbitrary information from unprotected endpoints within the master's host network (such as link-local or loopback services).

Affected Packages

Go k8s.io/kubernetes

Affected versions: 1.18.0 (fixed in 1.18.1)

Go k8s.io/kubernetes

Affected versions: 1.17.0 (fixed in 1.17.4)

Go k8s.io/kubernetes

Affected versions: 1.16.0 (fixed in 1.16.9)

Go k8s.io/kubernetes

Affected versions: 0 (fixed in 1.15.12)

Related CVEs

CVE-2020-8555

Key Information

GHSA ID

GHSA-x6mj-w4jf-jmgw

Published

February 15, 2022 1:57 AM

Last Modified

September 18, 2023 10:44 PM

CVSS Score

5.0 /10

Primary Ecosystem

Primary Package

k8s.io/kubernetes

GitHub Reviewed

✓ Yes

Dataset

Last updated: November 26, 2025 6:30 AM

Data from GitHub Advisory Database. This information is provided for research and educational purposes.