{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-126304", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-11-10T20:16:44.443Z", "datePublished": "2026-11-13T09:36:23.105Z", "dateUpdated": "2026-11-13T09:36:23.105Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-11-13T09:36:23.105Z"}, "datePublic": "2026-10-26T00:00:00.000Z", "title": "NLTK 3.10.0 before 3.10.4 Symlink Escape in YCOECorpusReader", "descriptions": [{"lang": "en", "value": "NLTK from 3.10.0 before 3.10.4 contains a symlink escape vulnerability in YCOECorpusReader that allows attackers to read files outside the corpus root by planting psd or pos directory symlinks. Attackers controlling a YCOE corpus can make parsed_sents() and tagged_words() return file content from other corpora or temporary files within the NLTK data sandbox."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Improper Link Resolution Before File Access ('Link Following')", "cweId": "CWE-59", "type": "CWE"}]}], "affected": [{"vendor": "nltk", "product": "nltk", "defaultStatus": "unaffected", "packageURL": "pkg:pypi/nltk", "versions": [{"version": "3.10.0", "status": "affected", "versionType": "semver", "lessThan": "3.10.4"}, {"version": "3.10.4", "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": "3.10.4"}]}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "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", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 8.7, "baseSeverity": "HIGH"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH"}}], "references": [{"url": "https://github.com/nltk/nltk/security/advisories/GHSA-qg35-44qx-7vrr", "tags": ["vendor-advisory"], "name": "GitHub Security Advisory (GHSA-qg35-44qx-7vrr)"}, {"name": "VulnCheck Advisory: NLTK 3.10.0 before 3.10.4 Symlink Escape in YCOECorpusReader", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/nltk-3.10.0-before-3.10.4-symlink-escape-in-ycoecorpusreader"}], "credits": [{"lang": "en", "value": "manus-pi", "type": "reporter"}, {"lang": "en", "value": "manus-use", "type": "reporter"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

{}

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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[3.10.0,3.10.4)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "3.10.4"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "nltk", "source": "cna", "vendor": "nltk"}, "product": "nltk", "vendor": "nltk"}], "created": "2026-11-13T18:15:21.582567+00:00", "updated": "2026-11-14T14:45:22.070397+00:00", "vendors": ["nltk", "nltk$PRODUCT$nltk"]}