ServiceAccount token disclosure via install-cni container logs_CVE-2026-41184

6 / 10

MEDIUM

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

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.

Basic Information

ID CVE-2026-41184

Source Tigera

Published May 28, 2026 at 15:47

Affected Product

Vendor Tigera

Product Calico

Version 3.32.0

Affected Versions Tigera Calico 0

CWE Classification

CWE-532

References

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    "published": "2026-05-28T15:47:42.173Z",
    "modified": "2026-05-28T15:47:42.173Z",
    "type": "cve",
    "title": "ServiceAccount token disclosure via install-cni container logs",
    "source": "Tigera",
    "references": "https://github.com/projectcalico/calico/pull/12502\nhttps://github.com/projectcalico/calico/pull/12527\nhttps://github.com/projectcalico/calico/pull/12526\nhttps://www.tigera.io/security-bulletins/tta-2026-001/",
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