CVE-2019-14751

HIGH

Nltk < 3.4.5 - Path Traversal

Title source: rule

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.

Exploits (1)

nomisec WRITEUP 4 stars

by mssalvatore · poc

https://github.com/mssalvatore/CVE-2019-14751_PoC

View Code ZIP pw:eip

References (8)

[Mailing List] http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00054.html

[Mailing List] http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00001.html

[Exploit, Patch, Third Party Advisory] https://github.com/mssalvatore/CVE-2019-14751_PoC

[Release Notes] https://github.com/nltk/nltk/blob/3.4.5/ChangeLog

[Patch] https://github.com/nltk/nltk/commit/f59d7ed8df2e0e957f7f247fe218032abdbe9a10

[Exploit, Patch, Third Party Advisory] https://salvatoresecurity.com/zip-slip-in-nltk-cve-2019-14751/

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QI4IJGLZQ5S7C5LNRNROHAO2P526XE3D/

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZGZSSEJH7RHH3RBUEVWWYT75QU67J7SE/

Scores

CVSS v3 7.5

EPSS 0.0322

EPSS Percentile 87.1%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Details

CWE

CWE-22

Status published

Products (2)

nltk/nltk < 3.4.5

pypi/nltk 0 - 3.4.5PyPI

Published Aug 22, 2019

Tracked Since Feb 18, 2026