{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-93321", "assignerOrgId": "686469e6-3ff6-451b-ab8b-cf5b9e89401e", "state": "PUBLISHED", "assignerShortName": "Docker", "dateReserved": "2026-09-17T17:18:08.293Z", "datePublished": "2026-10-05T22:00:54.477Z", "dateUpdated": "2026-10-05T22:00:54.477Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "packageName": "github.com/moby/buildkit", "product": "BuildKit", "vendor": "moby", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "0.33.0", "versionType": "semver"}]}], "credits": [{"lang": "en", "type": "finder", "value": "Haoxiang Yan (https://github.com/Yanhaoxi)"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>A malicious frontend can submit an LLB definition that causes buildkitd to panic and terminate, interrupting all builds running on that daemon.</p>"}], "value": "A malicious frontend can submit an LLB definition that causes buildkitd\nto panic and terminate, interrupting all builds running on that daemon."}], "metrics": [{"cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "baseScore": 6.9, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "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-129", "description": "CWE-129: Improper Validation of Array Index", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "686469e6-3ff6-451b-ab8b-cf5b9e89401e", "shortName": "Docker", "dateUpdated": "2026-10-05T22:00:54.477Z"}, "references": [{"tags": ["vendor-advisory"], "url": "https://github.com/moby/buildkit/security/advisories/GHSA-fjj4-h6vf-m9hj"}, {"tags": ["patch"], "url": "https://github.com/moby/buildkit/releases/tag/v0.33.1"}], "source": {"discovery": "EXTERNAL"}, "title": "Malformed LLB file operation can crash buildkitd", "workarounds": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Avoid using external BuildKit frontends from untrusted sources. Dockerfile builds are unaffected.</p>"}], "value": "Avoid using external BuildKit frontends from untrusted sources. Dockerfile builds are unaffected."}]}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "packageName": "github.com/moby/buildkit", "product": "BuildKit", "vendor": "moby", "versions": [{"lessThanOrEqual": "0.33.0", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "security@docker.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A malicious frontend can submit an LLB definition that causes buildkitd\nto panic and terminate, interrupting all builds running on that daemon."}], "id": "CVE-2026-93321", "lastModified": "2026-10-05T22:16:58.960", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.9, "baseSeverity": "MEDIUM", "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": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security@docker.com", "type": "Secondary"}]}, "published": "2026-10-05T22:16:58.960", "references": [{"source": "security@docker.com", "url": "https://github.com/moby/buildkit/releases/tag/v0.33.1"}, {"source": "security@docker.com", "url": "https://github.com/moby/buildkit/security/advisories/GHSA-fjj4-h6vf-m9hj"}], "sourceIdentifier": "security@docker.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-129"}], "source": "security@docker.com", "type": "Secondary"}]}

{}

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