CVE-2026-106487

The @backstage/plugin-kubernetes-backend package in Backstage (prior to version 0.21.10 ) is vulnerable to an unsupported catalog cluster authentication mode in the Kubernetes backend. If catalog contributors can modify kubernetes-cluster Resource entities , the backend might use its local in-clu...

CVE-2026-106487 Backstage: Unsupported catalog cluster authentication mode in kubernetes backend

Backstage is an open framework for building developer portals. Prior to 0.21.10, the @backstage/plugin-kubernetes-backend package is affected by unsupported catalog cluster authentication mode in kubernetes backend. Deployments using catalog cluster discovery may be affected when catalog...

CVE-2026-106487: Unintended Proxy or Intermediary

Backstage is an open framework for building developer portals. Prior to 0.21.10, the @backstage/plugin-kubernetes-backend package is affected by unsupported catalog cluster authentication mode in kubernetes backend. Deployments using catalog cluster discovery may be affected when catalog...

PT-2026-107268

Name of the Vulnerable Software and Affected Versions Backstage versions prior to 0.21.10 Description The @backstage/plugin-kubernetes-backend package contains an unsupported catalog cluster authentication mode. In deployments utilizing catalog cluster discovery, the issue arises when catalog...

Malware in backstage-plugin-kubernetes-backend

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outsid...