What’s Vulnerable › Vulnerabilities

CVE-2021-25738: Code exec via yaml parsing

• Severity: medium (CVSS 6.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-10-11 · updated 2026-06-17
• Weakness: CWE-20

Description

Loading specially-crafted yaml with the Kubernetes Java Client library can lead to code execution.

Affected products

• Kubernetes Java Client: through 9.0.2; from 10.0.0 through 10.0.1; from 11.0.0 before 11.0.1 — fixed in 11.0.1

How to fix

Upgrade to a fixed version: Kubernetes Java Client 11.0.1. Check the vendor advisory for mitigations.

References

• http://www.openwall.com/lists/oss-security/2022/08/23/2
• https://github.com/kubernetes-client/java/issues/1698
• https://groups.google.com/g/kubernetes-security-announce/c/K_pOK2WbAJk
• http://www.openwall.com/lists/oss-security/2022/08/23/2
• https://github.com/kubernetes-client/java/issues/1698
• https://groups.google.com/g/kubernetes-security-announce/c/K_pOK2WbAJk

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