What’s Vulnerable › Vulnerabilities

CVE-2019-11250: Kubernetes client-go logs authorization headers at debug verbosity levels

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-08-29 · updated 2026-06-17
• Weakness: CWE-532

Description

The Kubernetes client-go library logs request headers at verbosity levels of 7 or higher. This can disclose credentials to unauthorized users via logs or command output. Kubernetes components (such as kube-apiserver) prior to v1.16.0, which make use of basic or bearer token authentication, and run at high verbosity levels, are affected.

Affected products

• Kubernetes: before 1.15.3; 1.15.3, 1.15.4-beta0, 1.16.0-alpha1, 1.16.0-alpha2, 1.16.0-alpha3, 1.16.0-beta1 (+1) — fixed in 1.15.3
• Red Hat OpenShift Container Platform 4.18: 3.11, 4.1

How to fix

Upgrade to a fixed version: Kubernetes 1.15.3. Check the vendor advisory for mitigations.

References

• http://www.openwall.com/lists/oss-security/2020/10/16/2
• https://access.redhat.com/errata/RHSA-2019:4052
• https://access.redhat.com/errata/RHSA-2019:4087
• https://github.com/kubernetes/kubernetes/issues/81114
• https://security.netapp.com/advisory/ntap-20190919-0003/
• http://www.openwall.com/lists/oss-security/2020/10/16/2
• https://access.redhat.com/errata/RHSA-2019:4052
• https://access.redhat.com/errata/RHSA-2019:4087
• https://github.com/kubernetes/kubernetes/issues/81114
• https://security.netapp.com/advisory/ntap-20190919-0003/

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