CVE-2022-21951: Rancher's weave CNI password is not configured when a cluster is created from an RKE template

CVE-2022-21951 · Severity: low · CVSS 3.1 · Published 2026-03-03

Rancher's weave CNI password is not configured when a cluster is created from an RKE template

Technologies: github.com/rancher/rancher (Go). Vendors: Go.

Quick answers

Is CVE-2022-21951 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2022-21951 being exploited in the wild.
How severe is CVE-2022-21951?
Low severity, with a CVSS score of 3.1, published 3 March 2026.
Which products and versions are affected?
github.com/rancher/rancher (Go) SEMVER:introduced=2.6.0,fixed=2.6.5.
Is there a fix for CVE-2022-21951?
Yes. github.com/rancher/rancher (Go): upgrade to 2.6.5 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2022-21951?
Check whether you run github.com/rancher/rancher (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • github.com/rancher/rancher (Go): upgrade to 2.6.5 or later
    go get github.com/rancher/rancher@v2.6.5

Affected products

  • github.com/rancher/rancher (Go) SEMVER:introduced=2.6.0,fixed=2.6.5

Identifiers

  • CVE-2022-21951
  • GHSA-vrph-m5jj-c46c

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