CVE-2026-62383

Description

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.

CVSS Vector

References

• https://github.com/nltk/nltk/security/advisories/GHSA-3hhw-38pf-pxj6
• https://www.vulncheck.com/advisories/nltk-ipipancorpusreader-symlink-arbitrary-file-read