CVE-2026-41184: medium-severity vulnerability in Tigera Calico
ServiceAccount token disclosure via install-cni container logs
Published
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6epss 0.5%
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:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:L/SI:L/SA:L
Affected products
Tigera · CalicoRelated CVEs — Tigera Calico
In the same product, most dangerous first.
CVE-2026-41186MEDIUMUnauthenticated Go pprof exposure in Calico debug serverEPSS 0.7%CVE-2026-6540HIGHL7 policy bypass via unnormalized HTTP path matchingEPSS 0.5%CVE-2026-41187MEDIUMCalico Tier Authorization Bypass via DeleteCollectionEPSS 0.4%CVE-2026-41185MEDIUMServiceAccount token disclosure via Azure IPAM CNI plugin logsEPSS 0.3%CVE-2026-6720HIGHCalicoctl leaks cluster credentials to stderr when verbose logging is enabledEPSS 0.2%CVE-2024-33522MEDIUMPrivilege escalation in Calico CNI install binaryEPSS 0.2%