{"id":"CVE-2026-41184","aliases":["GHSA-9p7w-w5q6-mxj3","GO-2026-5888"],"url":"https://o3.security/vulnerability/CVE-2026-41184","summary":"ServiceAccount token disclosure via install-cni container logs","details":"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.","published":"2026-05-28T15:47:42.173Z","modified":"2026-08-12T03:51:42.021242450Z","cvss":null,"epss":{"score":0.00504,"percentile":0.40758,"asOf":"2026-08-24"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/projectcalico/calico","fixedVersion":"3.31.6"},{"ecosystem":"Go","name":"github.com/projectcalico/calico","fixedVersion":"1.11.0-cni-plugin.0.20260417001138-cd73bc2cea0f"}],"fix":{"url":"https://github.com/projectcalico/calico/pull/12502","label":"projectcalico/calico#12502"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41184.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41184"},{"type":"ADVISORY","url":"https://www.tigera.io/security-bulletins/tta-2026-001/"},{"type":"FIX","url":"https://github.com/projectcalico/calico/pull/12502"},{"type":"FIX","url":"https://github.com/projectcalico/calico/pull/12526"},{"type":"FIX","url":"https://github.com/projectcalico/calico/pull/12527"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:42.021242450Z"}}