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CVE-2026-41184

6.0 medium SSVC exploitation: none Analyzed
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 4

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 6.0 · tigeraNVD modified 2026-10-26 13:10

Affected (CPE criteria) 3

  • cpe:2.3:a:tigera:calico:*:*:*:*:enterprise:*:*:*
  • cpe:2.3:a:tigera:calico:*:*:*:*:open_source:*:*:*
  • cpe:2.3:a:tigera:calico:*:*:*:*:cloud:*:*:*

References 4