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    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-65915",
        "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "state": "PUBLISHED",
        "assignerShortName": "VulnCheck",
        "dateReserved": "2026-07-23T12:51:09.595Z",
        "datePublished": "2026-08-22T14:12:41.391Z",
        "dateUpdated": "2026-08-22T14:12:41.391Z"
    },
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                "dateUpdated": "2026-08-22T14:12:41.391Z"
            },
            "datePublic": "2026-08-07T00:00:00.000Z",
            "title": "NLTK before 3.10.0 Arbitrary File Read via FileSystemPathPointer",
            "descriptions": [
                {
                    "lang": "en",
                    "value": "NLTK versions before 3.10.0 contain a logic bug in FileSystemPathPointer.open() where the sandbox validation check compares a normalized path against itself, making the security check permanently inert. Attackers can pass file:// URLs to nltk.data.load() to read arbitrary files accessible to the process user, including credentials and configuration files."
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "description": "Improper Access Control",
                            "cweId": "CWE-284",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "nltk",
                    "product": "nltk",
                    "defaultStatus": "unaffected",
                    "packageURL": "pkg:pypi/nltk",
                    "versions": [
                        {
                            "version": "0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThan": "3.10.0"
                        },
                        {
                            "version": "3.10.0",
                            "status": "unaffected",
                            "versionType": "semver"
                        }
                    ]
                }
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                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:a:nltk:nltk:*:*:*:*:*:*:*:*",
                                    "versionEndExcluding": "3.10.0"
                                }
                            ]
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                    ]
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                    "cvssV4_0": {
                        "version": "4.0",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "LOW",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "HIGH",
                        "vulnIntegrityImpact": "NONE",
                        "vulnAvailabilityImpact": "NONE",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 7.1,
                        "baseSeverity": "HIGH"
                    }
                },
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                        "version": "3.1",
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                        "privilegesRequired": "LOW",
                        "userInteraction": "NONE",
                        "scope": "UNCHANGED",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "NONE",
                        "availabilityImpact": "NONE",
                        "baseScore": 6.5,
                        "baseSeverity": "MEDIUM"
                    }
                }
            ],
            "references": [
                {
                    "url": "https://github.com/nltk/nltk/security/advisories/GHSA-72r2-7mfr-5xr9",
                    "tags": [
                        "vendor-advisory"
                    ],
                    "name": "GitHub Security Advisory (GHSA-72r2-7mfr-5xr9)"
                },
                {
                    "name": "VulnCheck Advisory: NLTK before 3.10.0 Arbitrary File Read via FileSystemPathPointer",
                    "tags": [
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                    "value": "ZeroXJacks",
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}