PYSEC-2026-2237

NLTK Natural Language Toolkit is a suite of open source Python modules, data sets, and tutorials supporting research and development in Natural Language Processing. In versions 3.9.3 and prior, the NLTK downloader does not validate the subdir and id attributes when processing remote XML index...

GHSA-469J-VMHF-R6V7 NLTK has a Downloader Path Traversal Vulnerability (AFO) - Arbitrary File Overwrite

Vulnerability Description The NLTK downloader does not validate the subdir and id attributes when processing remote XML index files. Attackers can control a remote XML index server to provide malicious values containing path traversal sequences such as ../, which can lead to: 1. Arbitrary Directo...