NLTK through 3.8.1 allows remote code execution if untrusted packages have pickled Python code, and the integrated data package download functionality is used. This affects, for example, averagedperceptrontagger and punkt.
{ "binaries": [ { "binary_version": "3.7-1", "binary_name": "python3-nltk" } ] }
{ "binaries": [ { "binary_version": "3.8.1-1", "binary_name": "python3-nltk" } ] }
{ "binaries": [ { "binary_version": "2.0~b9-0ubuntu4.1~esm4", "binary_name": "python-nltk" } ] }
{ "binaries": [ { "binary_version": "3.1-1ubuntu0.1+esm2", "binary_name": "python-nltk" }, { "binary_version": "3.1-1ubuntu0.1+esm2", "binary_name": "python3-nltk" } ] }
{ "binaries": [ { "binary_version": "3.2.5-1ubuntu0.1+esm2", "binary_name": "python-nltk" }, { "binary_version": "3.2.5-1ubuntu0.1+esm2", "binary_name": "python3-nltk" } ] }
{ "binaries": [ { "binary_version": "3.4.5-2ubuntu0.1~esm2", "binary_name": "python3-nltk" } ] }