CVE-2026-70626
MEDIUM
NVD
CVSS Score
6.2
Severity
MEDIUM
Published
Aug 22, 2026
Vendor
unknown
Description
NLTK versions before 3.9.4 contain a symlink escape vulnerability in CorpusReader.open() that allows local attackers to read arbitrary files outside the corpus root. The vulnerability exists because path validation is lexical and does not account for symlink resolution, enabling attackers to place symlinks inside the corpus root to access files outside the intended boundary.