CVE-2026-41184

Summary

In Calico, the install-cni init container logs the rendered CNI configuration to standard output. When the configuration template uses the SERVICEACCOUNT_TOKEN placeholder (Canal/Flannel-Calico deployments), the installer substitutes the live Kubernetes ServiceAccount bearer token before logging, exposing the token to any authenticated user with pods/log permission in the namespace with calico-node. The token holds patch privileges on pods/status, enabling annotation-based attacks against cluster workloads. The default kubeconfig-based authentication path is not affected. This is a direct regression of TTA-2018-001.

Affected Software

VendorProductVersion RangeStatus
TigeraCalico3.32.0unaffected
TigeraCalico0 < 3.31.6affected

Weaknesses

  • CWE-532: CWE-532 Insertion of sensitive information into log file

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References