{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-54293", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-12T17:46:37.293Z", "datePublished": "2026-06-22T17:25:05.611Z", "dateUpdated": "2026-06-22T17:25:05.611Z"}, "containers": {"cna": {"title": "NLTK: URL-Encoded Path Traversal in nltk.data.load() Allows Arbitrary Local File Read", "problemTypes": [{"descriptions": [{"cweId": "CWE-22", "lang": "en", "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/nltk/nltk/security/advisories/GHSA-p4gq-832x-fm9v", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/nltk/nltk/security/advisories/GHSA-p4gq-832x-fm9v"}, {"name": "https://github.com/nltk/nltk/pull/3575", "tags": ["x_refsource_MISC"], "url": "https://github.com/nltk/nltk/pull/3575"}], "affected": [{"vendor": "nltk", "product": "nltk", "versions": [{"version": "< 3.10.0-rc1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-06-22T17:25:05.611Z"}, "descriptions": [{"lang": "en", "value": "NLTK (Natural Language Toolkit) is a suite of open source Python modules, data sets, and tutorials supporting research and development in Natural Language Processing. Prior to 3.10.0-rc1, nltk.data.load() in NLTK is vulnerable to path traversal via URL-encoded path separators and traversal segments when using the nltk: URL scheme. The unsafe-path regex check is performed before url2pathname() decodes the %xx sequences (a classic decode-after-check / TOCTOU-style flaw), allowing an attacker to bypass the protection documented in NLTK's SECURITY.md and read arbitrary files from the filesystem. While literal traversal strings such as ../../../etc/passwd are correctly blocked, encoded variants such as %2fetc%2fpasswd, %2e%2e%2f..., and ..%2f..%2f slip past the regex and are subsequently decoded into a real filesystem path. This vulnerability is fixed in 3.10.0-rc1."}], "source": {"advisory": "GHSA-p4gq-832x-fm9v", "discovery": "UNKNOWN"}}}}

{}

{}

{}

{"created": "2026-06-22T19:30:06.816063+00:00", "updated": "2026-06-22T19:30:06.816068+00:00", "vendors": []}