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2 vulnerabilities found for SwarmKit by moby
CVE-2026-115539 (GCVE-0-2026-115539)
Vulnerability from nvd – Published: 2026-11-10 19:57 – Updated: 2026-11-10 19:57
VLAI
EPSS
VEX
Title
Cluster-API proxy overwrites forwarded client identity with its own
Summary
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.
Severity
CWE
- CWE-441 - Unintended Proxy or Intermediary ('Confused Deputy')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/moby/swarmkit/security/advisor… | vendor-advisory |
Impacted products
{
"containers": {
"cna": {
"affected": [
{
"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"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "abdulraheemalick (https://github.com/abdulraheemalick)"
}
],
"descriptions": [
{
"lang": "en",
"value": "SwarmKit\u0027s Cluster-API proxy can overwrite a forwarded client\u0027s TLS identity with an intermediary manager\u0027s identity. WithMetadataForwardTLSInfo replaces outgoing metadata with a copy of the incoming metadata, discarding the redirect guard\u0027s 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\u0027s own key, escalating privileges from worker to manager. Applications built with an affected SwarmKit version and grpc-go 1.39 or later are impacted."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 7.7,
"baseSeverity": "HIGH",
"exploitMaturity": "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",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-441",
"description": "CWE-441: Unintended Proxy or Intermediary (\u0027Confused Deputy\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-11-10T19:57:40.523Z",
"orgId": "686469e6-3ff6-451b-ab8b-cf5b9e89401e",
"shortName": "Docker"
},
"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."
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Cluster-API proxy overwrites forwarded client identity with its own"
}
},
"cveMetadata": {
"assignerOrgId": "686469e6-3ff6-451b-ab8b-cf5b9e89401e",
"assignerShortName": "Docker",
"cveId": "CVE-2026-115539",
"datePublished": "2026-11-10T19:57:40.523Z",
"dateReserved": "2026-10-22T19:45:05.740Z",
"dateUpdated": "2026-11-10T19:57:40.523Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-115539 (GCVE-0-2026-115539)
Vulnerability from cvelistv5 – Published: 2026-11-10 19:57 – Updated: 2026-11-10 19:57
VLAI
EPSS
VEX
Title
Cluster-API proxy overwrites forwarded client identity with its own
Summary
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.
Severity
CWE
- CWE-441 - Unintended Proxy or Intermediary ('Confused Deputy')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/moby/swarmkit/security/advisor… | vendor-advisory |
Impacted products
{
"containers": {
"cna": {
"affected": [
{
"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"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "abdulraheemalick (https://github.com/abdulraheemalick)"
}
],
"descriptions": [
{
"lang": "en",
"value": "SwarmKit\u0027s Cluster-API proxy can overwrite a forwarded client\u0027s TLS identity with an intermediary manager\u0027s identity. WithMetadataForwardTLSInfo replaces outgoing metadata with a copy of the incoming metadata, discarding the redirect guard\u0027s 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\u0027s own key, escalating privileges from worker to manager. Applications built with an affected SwarmKit version and grpc-go 1.39 or later are impacted."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 7.7,
"baseSeverity": "HIGH",
"exploitMaturity": "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",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-441",
"description": "CWE-441: Unintended Proxy or Intermediary (\u0027Confused Deputy\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-11-10T19:57:40.523Z",
"orgId": "686469e6-3ff6-451b-ab8b-cf5b9e89401e",
"shortName": "Docker"
},
"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."
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Cluster-API proxy overwrites forwarded client identity with its own"
}
},
"cveMetadata": {
"assignerOrgId": "686469e6-3ff6-451b-ab8b-cf5b9e89401e",
"assignerShortName": "Docker",
"cveId": "CVE-2026-115539",
"datePublished": "2026-11-10T19:57:40.523Z",
"dateReserved": "2026-10-22T19:45:05.740Z",
"dateUpdated": "2026-11-10T19:57:40.523Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}