Open Redirect Affecting kubernetes package, versions <1.20.5+really1.20.2-1


Severity

Recommended
0.0
medium
0
10

Snyk's Security Team recommends NVD's CVSS assessment. Learn more

Threat Intelligence

EPSS
1.33% (70th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-ECHOLATEST-KUBERNETES-20079281
  • published24 Sept 2026
  • disclosed6 Sept 2021

Introduced: 6 Sep 2021

CVE-2021-25737  (opens in a new tab)
CWE-601  (opens in a new tab)

How to fix?

Upgrade Echo:latest kubernetes to version 1.20.5+really1.20.2-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kubernetes package and not the kubernetes package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

A security issue was discovered in Kubernetes where a user may be able to redirect pod traffic to private networks on a Node. Kubernetes already prevents creation of Endpoint IPs in the localhost or link-local range, but the same validation was not performed on EndpointSlice IPs.

CVSS Base Scores

version 3.1