{"id":"CVE-2026-41184","sourceIdentifier":"psirt@tigera.io","published":"2026-05-28T17:16:22.270","lastModified":"2026-06-17T10:46:17.633","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"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."}],"affected":[{"source":"psirt@tigera.io","affectedData":[{"vendor":"Tigera","product":"Calico","defaultStatus":"affected","packageName":"cni-plugin","versions":[{"version":"3.32.0","versionType":"semver","status":"unaffected"},{"version":"0","lessThan":"3.31.6","versionType":"semver","status":"affected"}]}]}],"metrics":{"cvssMetricV40":[{"source":"psirt@tigera.io","type":"Secondary","cvssData":{"version":"4.0","vectorString":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":6.0,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","subAvailabilityImpact":"LOW","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-05-28T17:04:29.437633Z","id":"CVE-2026-41184","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"psirt@tigera.io","type":"Secondary","description":[{"lang":"en","value":"CWE-532"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:tigera:calico:*:*:*:*:enterprise:*:*:*","versionEndExcluding":"3.21.7","matchCriteriaId":"68BC4A3E-A53E-463F-B627-EB21276BE079"},{"vulnerable":true,"criteria":"cpe:2.3:a:tigera:calico:*:*:*:*:open_source:*:*:*","versionEndExcluding":"3.32.0","matchCriteriaId":"878E68F9-0DAD-465A-875C-AAEC94EB3C72"},{"vulnerable":true,"criteria":"cpe:2.3:a:tigera:calico:*:*:*:*:cloud:*:*:*","versionEndExcluding":"22.4.0","matchCriteriaId":"91B89C3B-F20D-403E-9207-39C084B6BCDB"},{"vulnerable":true,"criteria":"cpe:2.3:a:tigera:calico:*:*:*:*:enterprise:*:*:*","versionStartIncluding":"3.22.0","versionEndExcluding":"3.22.3","matchCriteriaId":"A3C3C22D-0E75-48A1-A1C7-8DD4FE15BF1E"}]}]}],"references":[{"url":"https://github.com/projectcalico/calico/pull/12502","source":"psirt@tigera.io","tags":["Issue Tracking","Patch"]},{"url":"https://github.com/projectcalico/calico/pull/12526","source":"psirt@tigera.io","tags":["Issue Tracking","Patch"]},{"url":"https://github.com/projectcalico/calico/pull/12527","source":"psirt@tigera.io","tags":["Issue Tracking","Patch"]},{"url":"https://www.tigera.io/security-bulletins/tta-2026-001/","source":"psirt@tigera.io","tags":["Mitigation","Vendor Advisory"]}]}