{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2025-71437",
        "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "state": "PUBLISHED",
        "assignerShortName": "VulnCheck",
        "dateReserved": "2026-10-20T21:48:54.317Z",
        "datePublished": "2026-10-21T00:36:20.284Z",
        "dateUpdated": "2026-10-21T15:51:10.699Z"
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    "containers": {
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                "dateUpdated": "2026-10-21T00:36:20.284Z"
            },
            "datePublic": "2025-09-23T00:00:00.000Z",
            "title": "Astral uv through 0.8.21 Path Traversal via Symlinks in Sdist Tar Extraction",
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Astral uv before 0.8.22 contains a path traversal vulnerability in source distribution (sdist) tar extraction that allows a specially crafted sequence of symlinks to redirect file writes outside the intended extraction prefix. Attackers can publish a malicious sdist that, when installed by a victim, writes arbitrary files to filesystem locations outside the installation prefix."
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "description": "Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')",
                            "cweId": "CWE-22",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "astral-sh",
                    "product": "uv",
                    "defaultStatus": "unaffected",
                    "packageURL": "pkg:pypi/uv",
                    "versions": [
                        {
                            "version": "0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThanOrEqual": "0.8.21"
                        }
                    ]
                }
            ],
            "metrics": [
                {
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                        "Automatable": "NOT_DEFINED",
                        "Recovery": "NOT_DEFINED",
                        "Safety": "NOT_DEFINED",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "attackVector": "NETWORK",
                        "baseScore": 8.7,
                        "baseSeverity": "HIGH",
                        "exploitMaturity": "NOT_DEFINED",
                        "privilegesRequired": "NONE",
                        "providerUrgency": "NOT_DEFINED",
                        "subAvailabilityImpact": "NONE",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "userInteraction": "NONE",
                        "valueDensity": "NOT_DEFINED",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
                        "version": "4.0",
                        "vulnAvailabilityImpact": "NONE",
                        "vulnConfidentialityImpact": "HIGH",
                        "vulnIntegrityImpact": "NONE",
                        "vulnerabilityResponseEffort": "NOT_DEFINED"
                    },
                    "format": "CVSS"
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                        "attackVector": "NETWORK",
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                        "confidentialityImpact": "NONE",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "REQUIRED",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
                        "version": "3.1"
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                    "format": "CVSS"
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            ],
            "references": [
                {
                    "url": "https://github.com/astral-sh/uv/security/advisories/GHSA-7j9j-68r2-f35q",
                    "tags": [
                        "vendor-advisory"
                    ],
                    "name": "GitHub Security Advisory (GHSA-7j9j-68r2-f35q)"
                },
                {
                    "name": "VulnCheck Advisory: Astral uv through 0.8.21 Path Traversal via Symlinks in Sdist Tar Extraction",
                    "tags": [
                        "third-party-advisory"
                    ],
                    "url": "https://www.vulncheck.com/advisories/astral-uv-through-0.8.21-path-traversal-via-symlinks-in-sdist-tar-extraction"
                }
            ],
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                    "lang": "en",
                    "value": "calebbrown",
                    "type": "finder"
                },
                {
                    "lang": "en",
                    "value": "charliermarsh",
                    "type": "finder"
                },
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                    "lang": "en",
                    "value": "woodruffw",
                    "type": "coordinator"
                },
                {
                    "lang": "en",
                    "value": "zanieb",
                    "type": "finder"
                }
            ],
            "x_generator": {
                "engine": "vulncheck-endgame"
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        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-10-21T14:40:32.302978Z",
                                "id": "CVE-2025-71437",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-10-21T15:51:10.699Z"
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}