{"cve":"CVE-2019-14751","nvd":{"published":"2019-08-22T16:15:10.213","modified":"2026-06-17T02:18:56.613","status":"Modified","description":"NLTK Downloader before 3.4.5 is vulnerable to a directory traversal, allowing attackers to write arbitrary files via a ../ (dot dot slash) in an NLTK package (ZIP archive) that is mishandled during extraction.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","score":7.5},"cwes":["CWE-22"],"references":["http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00054.html","http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00001.html","https://github.com/mssalvatore/CVE-2019-14751_PoC","https://github.com/nltk/nltk/blob/3.4.5/ChangeLog","https://github.com/nltk/nltk/commit/f59d7ed8df2e0e957f7f247fe218032abdbe9a10"],"products":["nltk:nltk"],"source":"nvd","synced_at":"2026-10-19T20:58:39.700375520+00:00"},"epss":{"cve":"CVE-2019-14751","score":0.05674,"percentile":0.92986,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-mr7p-25v2-35wr","url":"https://osv.dev/vulnerability/GHSA-mr7p-25v2-35wr","summary":"NLTK Vulnerable To Path Traversal","modified":"2024-10-07T15:12:16.483022Z","packages":[{"ecosystem":"PyPI","name":"nltk","purl":"pkg:pypi/nltk","ranges":["<3.4.5"],"fixed":["3.4.5"]}]},{"id":"PYSEC-2019-106","url":"https://osv.dev/vulnerability/PYSEC-2019-106","summary":"","modified":"2023-11-08T04:01:10.707423Z","packages":[{"ecosystem":"PyPI","name":"nltk","purl":"pkg:pypi/nltk","ranges":["<3.4.5"],"fixed":["3.4.5"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}