{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-62383", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-07-13T22:40:54.412Z", "datePublished": "2026-08-22T14:12:36.606Z", "dateUpdated": "2026-08-22T14:12:36.606Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-08-22T14:12:36.606Z"}, "datePublic": "2026-08-07T00:00:00.000Z", "title": "nltk IPIPANCorpusReader Symlink Arbitrary File Read", "descriptions": [{"lang": "en", "value": "nltk versions before 3.10.2 contain a symlink-based arbitrary file read vulnerability in IPIPANCorpusReader methods that bypass nltk.pathsec validation entirely. Attackers can place a symlink in the corpus root directory and read arbitrary files accessible to the process by calling channels(), domains(), categories(), or fileids() methods with the symlink filename."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')", "cweId": "CWE-22", "type": "CWE"}]}], "affected": [{"vendor": "nltk", "product": "nltk", "defaultStatus": "unaffected", "packageURL": "pkg:pypi/nltk", "versions": [{"version": "3.10.0", "status": "affected", "versionType": "semver", "lessThan": "3.10.2"}, {"version": "3.10.2", "status": "unaffected", "versionType": "semver"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:nltk:nltk:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10.0", "versionEndExcluding": "3.10.2"}]}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N", "attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 6.8, "baseSeverity": "MEDIUM"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE", "baseScore": 5.5, "baseSeverity": "MEDIUM"}}], "references": [{"url": "https://github.com/nltk/nltk/security/advisories/GHSA-3hhw-38pf-pxj6", "tags": ["vendor-advisory"], "name": "GitHub Security Advisory (GHSA-3hhw-38pf-pxj6)"}, {"name": "VulnCheck Advisory: nltk IPIPANCorpusReader Symlink Arbitrary File Read", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/nltk-ipipancorpusreader-symlink-arbitrary-file-read"}], "credits": [{"lang": "en", "value": "LiteshGhute", "type": "reporter"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

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