Vulnerability Details CVE-2026-62383
nltk versions before 3.10.2 contain a symlink-based arbitrary file read vulnerability in IPIPANCorpusReader methods that bypass nltk.pathsec validation entirely. Attackers can place a symlink in the corpus root directory and read arbitrary files accessible to the process by calling channels(), domains(), categories(), or fileids() methods with the symlink filename.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 3.7%
CVSS Severity
CVSS v3 Score 5.5