CVE-2026-41184

MEDIUM

Tigera Calico - ServiceAccount Token Disclosure via Install-Cni Container Logs

Title source: rule
STIX 2.1

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.

Scores

CVSS v3 6.5
EPSS 0.0050
EPSS Percentile 38.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-532
Status published
Products (5)
tigera/calico < 22.4.0
tigera/calico < 3.21.7
Tigera/Calico < 3.31.6
tigera/calico < 3.32.0
Tigera/Calico 3.32.0
Published May 28, 2026
Tracked Since May 28, 2026