CVE-2026-115539

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-115539", "assignerOrgId": "686469e6-3ff6-451b-ab8b-cf5b9e89401e", "state": "PUBLISHED", "assignerShortName": "Docker", "dateReserved": "2026-10-22T19:45:05.740Z", "datePublished": "2026-11-10T19:57:40.523Z", "dateUpdated": "2026-11-10T19:57:40.523Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "686469e6-3ff6-451b-ab8b-cf5b9e89401e", "shortName": "Docker", "dateUpdated": "2026-11-10T19:57:40.523Z"}, "title": "Cluster-API proxy overwrites forwarded client identity with its own", "descriptions": [{"lang": "en", "value": "SwarmKit's Cluster-API proxy can overwrite a forwarded client's TLS identity with an intermediary manager's identity. WithMetadataForwardTLSInfo replaces outgoing metadata with a copy of the incoming metadata, discarding the redirect guard's changes when built with grpc-go 1.39 or later. During a short window after a leader change, two proxy hops through managers with inconsistent views of the leader can allow an attacker possessing a valid worker node TLS certificate and private key to obtain a manager node certificate for the attacker's own key, escalating privileges from worker to manager. Applications built with an affected SwarmKit version and grpc-go 1.39 or later are impacted."}], "affected": [{"defaultStatus": "unaffected", "packageName": "github.com/moby/swarmkit/v2", "product": "SwarmKit", "vendor": "moby", "versions": [{"version": "0", "status": "affected", "lessThan": "2.1.3", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "packageName": "github.com/docker/docker", "product": "Docker Engine", "vendor": "Docker", "versions": [{"version": "23.0.0", "status": "affected", "lessThan": "*", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "packageName": "github.com/moby/moby/v2", "product": "Moby", "vendor": "moby", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "2.0.0-beta.28", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "packageName": "github.com/moby/swarmkit", "product": "SwarmKit", "vendor": "moby", "versions": [{"version": "1.12.1-0.20220307221335-616e8db4c3b0", "status": "affected", "lessThan": "*", "versionType": "semver"}]}], "metrics": [{"cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N", "baseScore": 7.7, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-441", "description": "CWE-441: Unintended Proxy or Intermediary ('Confused Deputy')", "lang": "en", "type": "CWE"}]}], "references": [{"tags": ["vendor-advisory"], "url": "https://github.com/moby/swarmkit/security/advisories/GHSA-628g-hv7f-pgjc"}], "solutions": [{"lang": "en", "value": "Upgrade applications using github.com/moby/swarmkit/v2 to version 2.1.3 or later."}], "credits": [{"lang": "en", "type": "finder", "value": "abdulraheemalick (https://github.com/abdulraheemalick)"}], "source": {"discovery": "EXTERNAL"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "packageName": "github.com/moby/swarmkit/v2", "product": "SwarmKit", "vendor": "moby", "versions": [{"lessThan": "2.1.3", "status": "affected", "version": "0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "packageName": "github.com/docker/docker", "product": "Docker Engine", "vendor": "Docker", "versions": [{"lessThan": "*", "status": "affected", "version": "23.0.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "packageName": "github.com/moby/moby/v2", "product": "Moby", "vendor": "moby", "versions": [{"lessThanOrEqual": "2.0.0-beta.28", "status": "affected", "version": "0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "packageName": "github.com/moby/swarmkit", "product": "SwarmKit", "vendor": "moby", "versions": [{"lessThan": "*", "status": "affected", "version": "1.12.1-0.20220307221335-616e8db4c3b0", "versionType": "semver"}]}], "source": "security@docker.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "SwarmKit's Cluster-API proxy can overwrite a forwarded client's TLS identity with an intermediary manager's identity. WithMetadataForwardTLSInfo replaces outgoing metadata with a copy of the incoming metadata, discarding the redirect guard's changes when built with grpc-go 1.39 or later. During a short window after a leader change, two proxy hops through managers with inconsistent views of the leader can allow an attacker possessing a valid worker node TLS certificate and private key to obtain a manager node certificate for the attacker's own key, escalating privileges from worker to manager. Applications built with an affected SwarmKit version and grpc-go 1.39 or later are impacted."}], "id": "CVE-2026-115539", "lastModified": "2026-11-12T20:04:52.377", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 7.7, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/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", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security@docker.com", "type": "Secondary"}]}, "published": "2026-11-10T20:18:03.897", "references": [{"source": "security@docker.com", "url": "https://github.com/moby/swarmkit/security/advisories/GHSA-628g-hv7f-pgjc"}], "sourceIdentifier": "security@docker.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-441"}], "source": "security@docker.com", "type": "Secondary"}]}

{}

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