Browse CVEs

HIGH 7.8 CVE-2025-71408 NLTK (Natural Language Toolkit) before version 3.9.3 contains an eval injection vulnerability in the nltk.collocations module that allows an attacker… Nltk 3.9.3+ Fix from $1,9502026-07-24 HIGH 7.8 CVE-2026-12252 In nltk/nltk versions 3.9.3 and earlier, five Stanford interface classes (StanfordPOSTagger, StanfordNERTagger, StanfordParser, StanfordDependencyPar… Nltk after 3.9.3 Fix from $1,9502026-07-04 HIGH 7.5 CVE-2026-12243 NLTK version 3.9.4 is vulnerable to a path traversal attack due to an incomplete fix for GitHub Issue #3504. The `_UNSAFE_NO_PROTOCOL_RE` regex in `n… Nltk No fix yet Fix from $1,9502026-06-30 HIGH 7.5 CVE-2026-54293 NLTK (Natural Language Toolkit) is a suite of open source Python modules, data sets, and tutorials supporting research and development in Natural Lan… Nltk 3.10.0+ Fix from $1,9502026-06-22 HIGH 8.1 CVE-2026-33236 NLTK (Natural Language Toolkit) is a suite of open source Python modules, data sets, and tutorials supporting research and development in Natural Lan… Nltk after 3.9.3 Fix from $1,9502026-03-20 HIGH 7.5 CVE-2026-33231 NLTK (Natural Language Toolkit) is a suite of open source Python modules, data sets, and tutorials supporting research and development in Natural Lan… Nltk after 3.9.3 Fix from $1,9502026-03-20 MEDIUM 6.1 CVE-2026-33230 NLTK (Natural Language Toolkit) is a suite of open source Python modules, data sets, and tutorials supporting research and development in Natural Lan… Nltk after 3.9.3 Fix from $1,6002026-03-20 HIGH 7.5 CVE-2026-0846 A vulnerability in the `filestring()` function of the `nltk.util` module in nltk version 3.9.2 allows arbitrary file read due to improper validation … Nltk No fix yet Fix from $1,9502026-03-09 CRITICAL 10.0 CVE-2026-0848 NLTK versions <=3.9.2 are vulnerable to arbitrary code execution due to improper input validation in the StanfordSegmenter module. The module dynamic… Nltk after 3.9.2 Fix from $2,3002026-03-05 HIGH 7.5 CVE-2026-0847 A vulnerability in NLTK versions up to and including 3.9.2 allows arbitrary file read via path traversal in multiple CorpusReader classes, including … Nltk after 3.9.2 Fix from $1,9502026-03-04 HIGH 8.8 CVE-2025-14009 A critical vulnerability exists in the NLTK downloader component of nltk/nltk, affecting all versions. The _unzip_iter function in nltk/downloader.py… Nltk 3.9.3+ Fix from $1,9502026-02-18 HIGH 7.5 CVE-2021-43854 NLTK (Natural Language Toolkit) is a suite of open source Python modules, data sets, and tutorials supporting research and development in Natural Lan… Nltk 3.6.5+ Fix from $1,9502021-12-23 HIGH 7.5 CVE-2021-3828 nltk is vulnerable to Inefficient Regular Expression Complexity Nltk after 3.6.3 Fix from $1,9502021-09-27 HIGH 7.5 CVE-2019-14751EPSS 6% 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… Nltk 3.4.5+ Fix from $1,9502019-08-22