CVE-2026-81727

A flaw was found in NLTK. This vulnerability, a filesystem containment bypass, allows a local attacker with write access to a shared downloader directory to create special links hardlinks that point to files outside the intended installation area. When a package is extracted, these hardlinks can...

GHSA-4XW3-JF9X-X7MF Duplicate Advisory: Downloader.download follows hardlinks and overwrites outside-root files

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-f794-5jv7-7672. This link is maintained to preserve external references. Original Description NLTK versions before 3.10.3 contain a filesystem containment bypass vulnerability in the Downloader.download and...

Duplicate Advisory: Downloader.download follows hardlinks and overwrites outside-root files

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-f794-5jv7-7672. This link is maintained to preserve external references. Original Description NLTK versions before 3.10.3 contain a filesystem containment bypass vulnerability in the Downloader.download and...

Linux Distros Unpatched Vulnerability : CVE-2026-81727

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - NLTK versions before 3.10.3 contain a filesystem containment bypass vulnerability in the Downloader.download and Downloader.incrdownload methods that allows...

PT-2026-82622

Name of the Vulnerable Software and Affected Versions NLTK versions prior to 3.10.3 Description A filesystem containment bypass exists in the Downloader.download and Downloader.incr download methods. Attackers with write access to a shared downloader directory can create hardlinks pointing to fil...