{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-77179", "assignerOrgId": "686469e6-3ff6-451b-ab8b-cf5b9e89401e", "state": "PUBLISHED", "assignerShortName": "Docker", "dateReserved": "2026-08-20T15:32:02.935Z", "datePublished": "2026-09-15T13:32:41.132Z", "dateUpdated": "2026-09-15T13:32:41.132Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "platforms": ["MacOS"], "product": "Docker Sandboxes", "vendor": "Docker", "cpes": ["cpe:2.3:a:docker:docker_sandboxes:*:*:*:*:*:*:*:*"], "versions": [{"version": "0.28.0", "status": "affected", "lessThan": "0.42.0", "versionType": "semver"}]}], "credits": [{"lang": "en", "type": "finder", "value": "Oren Yomtov of accomplish.ai"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "On macOS, the virtio-fs host server used by Docker Sandboxes improperly follows symlinks when reopening an unlinked file from a stored path. A malicious guest can replace a parent directory with a symlink, escape the shared workspace, and read or modify arbitrary host files as the VMM user, potentially achieving host code execution."}], "value": "On macOS, the virtio-fs host server used by Docker Sandboxes improperly follows symlinks when reopening an unlinked file from a stored path. A malicious guest can replace a parent directory with a symlink, escape the shared workspace, and read or modify arbitrary host files as the VMM user, potentially achieving host code execution."}], "impacts": [{"capecId": "CAPEC-132", "descriptions": [{"lang": "en", "value": "CAPEC-132 Symlink Attack"}]}], "metrics": [{"cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H", "baseScore": 9.4, "baseSeverity": "CRITICAL", "attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "subAvailabilityImpact": "HIGH", "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-59", "description": "CWE-59: Improper Link Resolution Before File Access ('Link Following')", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "686469e6-3ff6-451b-ab8b-cf5b9e89401e", "shortName": "Docker", "dateUpdated": "2026-09-15T13:32:41.132Z"}, "references": [{"tags": ["product"], "url": "https://docs.docker.com/ai/sandboxes/"}, {"tags": ["product"], "url": "https://docs.docker.com/ai/sandboxes/security/isolation/"}, {"tags": ["release-notes"], "url": "https://github.com/docker/sbx-releases/releases/tag/v0.41.0"}], "source": {"discovery": "EXTERNAL"}, "title": "Docker Sandboxes guest can write arbitrary macOS host files via a symlink in the virtio-fs stored-path fallback", "workarounds": [{"lang": "en", "value": "Use --clone mode and avoid additional read-write host mounts: https://docs.docker.com/ai/sandboxes/usage/#clone-mode"}]}}}

{}

{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:a:docker:docker_sandboxes:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "platforms": ["MacOS"], "product": "Docker Sandboxes", "vendor": "Docker", "versions": [{"lessThan": "0.42.0", "status": "affected", "version": "0.28.0", "versionType": "semver"}]}], "source": "security@docker.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "On macOS, the virtio-fs host server used by Docker Sandboxes improperly follows symlinks when reopening an unlinked file from a stored path. A malicious guest can replace a parent directory with a symlink, escape the shared workspace, and read or modify arbitrary host files as the VMM user, potentially achieving host code execution."}], "id": "CVE-2026-77179", "lastModified": "2026-09-15T14:17:11.273", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 9.4, "baseSeverity": "CRITICAL", "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": "HIGH", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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": "2026-09-15T14:17:11.273", "references": [{"source": "security@docker.com", "url": "https://docs.docker.com/ai/sandboxes/"}, {"source": "security@docker.com", "url": "https://docs.docker.com/ai/sandboxes/security/isolation/"}, {"source": "security@docker.com", "url": "https://github.com/docker/sbx-releases/releases/tag/v0.41.0"}], "sourceIdentifier": "security@docker.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-59"}], "source": "security@docker.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": ["macos"], "status": "affected", "versions": {"scheme": "semver", "value": "[0.28.0,0.42.0)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Docker Sandboxes", "source": "cna", "vendor": "Docker"}, "product": "docker_sandboxes", "vendor": "docker"}], "created": "2026-09-15T14:30:07.735458+00:00", "updated": "2026-09-15T14:30:07.735500+00:00", "vendors": ["docker", "docker$PRODUCT$docker_sandboxes"]}