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Vulnerabilities CVE-2026-41184

CVE-2026-41184

Medium
Open
TLP:CLEAR

ServiceAccount token disclosure via install-cni container logs

NVD CVE.org
Critical Infrastructure

AI Analysis

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Description

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.

Details

CVSS Score
6.0
EPSS Score
0.50%

40.4th percentile

CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:L/SI:L/SA:L
Confidence
90%
Published
May 28, 2026
Last Modified
May 28, 2026
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