This page tracks the Ubuntu fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-79676 →

UBUNTU-CVE-2026-79676

NLTK versions before 3.10.3 contain a path traversal vulnerability in corpus readers that reopen root-derived paths using built-in open() instead of n...

Original description

The description as published by the source.

NLTK versions before 3.10.3 contain a path traversal vulnerability in corpus readers that reopen root-derived paths using built-in open() instead of nltk.pathsec.open(), allowing symlinks to escape trusted roots. Attackers who stage symlinked corpus files under a trusted data root can disclose outside-root content through normal corpus reader methods like channels(), domains(), and synonyms().

Source: OSV.dev (Open Source Vulnerabilities) OSV