Threats tagged 'ghsa-qg35-44qx-7vrr'

NLTK's YCOECorpusReader allows directory symlinks named 'psd' or 'pos' inside a YCOE corpus to escape the intended corpus root containment. This occurs because the path joining and validation logic does not resolve symlinks properly, enabling nested sub-readers to access files outside the corpus root but within the global NLTK data sandbox. An attacker controlling the corpus contents can exploit this to read files outside the corpus root, but only within the allowed sandbox. The vulnerability affects NLTK versions 3.10.0 through 3.10.3 and is fixed in version 3.10.4.