{
    "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": "2026-09-15T21:43:07.049Z"
    },
    "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": "2026-09-15T21:43:07.049Z"
            },
            "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/v0.42.0"
                }
            ],
            "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"
                }
            ]
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-09-15T15:00:58.602243Z",
                                "id": "CVE-2026-77179",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "total"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-09-15T15:01:06.221Z"
                }
            }
        ]
    }
}