{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-109375",
        "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "state": "PUBLISHED",
        "assignerShortName": "VulnCheck",
        "dateReserved": "2026-10-12T14:23:25.691Z",
        "datePublished": "2026-10-12T20:55:08.596Z",
        "dateUpdated": "2026-10-12T20:55:08.596Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
                "shortName": "VulnCheck",
                "dateUpdated": "2026-10-12T20:55:08.596Z"
            },
            "datePublic": "2026-05-05T00:00:00.000Z",
            "title": "Vercel deepsec before 1.1.17 Arbitrary File Write via Symlink in Sandbox Tarball Extraction",
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Vercel deepsec from 0.1.0 before 1.1.17 contains a link following vulnerability in extractTarballLocally that allows sandboxed code to write files outside the sandbox by planting links in result tarballs. Attackers controlling sandbox code, such as a prompt-injected coding agent, can plant symbolic or hard links in the host data directory to write arbitrary files on the orchestrator host."
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "description": "Improper Link Resolution Before File Access ('Link Following')",
                            "cweId": "CWE-59",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "Vercel",
                    "product": "deepsec",
                    "defaultStatus": "unaffected",
                    "versions": [
                        {
                            "version": "0.1.0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThan": "1.1.17"
                        },
                        {
                            "version": "1.1.17",
                            "status": "unaffected",
                            "versionType": "semver"
                        }
                    ],
                    "packageURL": "pkg:npm/deepsec",
                    "repo": "https://github.com/vercel-labs/deepsec"
                }
            ],
            "metrics": [
                {
                    "format": "CVSS",
                    "cvssV4_0": {
                        "version": "4.0",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "PRESENT",
                        "privilegesRequired": "NONE",
                        "userInteraction": "PASSIVE",
                        "vulnConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "NONE",
                        "vulnAvailabilityImpact": "NONE",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "HIGH",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 4.9,
                        "baseSeverity": "MEDIUM"
                    }
                },
                {
                    "format": "CVSS",
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:H/A:N",
                        "attackVector": "NETWORK",
                        "attackComplexity": "HIGH",
                        "privilegesRequired": "NONE",
                        "userInteraction": "REQUIRED",
                        "scope": "CHANGED",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "HIGH",
                        "availabilityImpact": "NONE",
                        "baseScore": 6.1,
                        "baseSeverity": "MEDIUM"
                    }
                }
            ],
            "references": [
                {
                    "url": "https://github.com/vercel-labs/deepsec/pull/46",
                    "tags": [
                        "issue-tracking",
                        "patch"
                    ],
                    "name": "GitHub Pull Request #46"
                },
                {
                    "url": "https://github.com/vercel-labs/deepsec/pull/47",
                    "tags": [
                        "patch",
                        "issue-tracking"
                    ],
                    "name": "GitHub Pull Request #47"
                },
                {
                    "url": "https://github.com/vercel-labs/deepsec/commit/c5a4e4220ece72aee67c2ea21f4340e65f673fc1",
                    "tags": [
                        "patch"
                    ],
                    "name": "Patch Commit"
                },
                {
                    "url": "https://github.com/vercel-labs/deepsec",
                    "tags": [
                        "product"
                    ]
                },
                {
                    "name": "VulnCheck Advisory: Vercel deepsec before 1.1.17 Arbitrary File Write via Symlink in Sandbox Tarball Extraction",
                    "tags": [
                        "third-party-advisory"
                    ],
                    "url": "https://www.vulncheck.com/advisories/vercel-deepsec-before-1.1.17-arbitrary-file-write-via-symlink-in-sandbox-tarball-extraction"
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "Yunus Aydın",
                    "type": "finder"
                }
            ],
            "x_generator": {
                "engine": "vulncheck-endgame"
            }
        }
    }
}