CVE-2026-41184
CVE-2026-41184 · ServiceAccount token disclosure via install-cni container logs
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 6.0 · Medium · EPSS 0.5% · Fix available
- Published
- Updated
Stack: containers
Affected products and versions
calico
- Versions
- 3.32.0: Not affected (semver)
- ≥ 0, < 3.31.6: Affected (semver)
Update to 3.31.6