CVE-2026-81726 NLTK through 3.10.3 Path Traversal via Model-Artifact APIs

NLTK through 3.10.3 contains a path traversal vulnerability in model-artifact APIs that bypass pathsec enforcement by using raw file operations on caller-controlled paths. Attackers can read or write files outside allowed sandbox roots through TransitionParser, AveragedPerceptron, PerceptronTagge...

CVE-2026-81726

NLTK through 3.10.3 contains a path traversal vulnerability in its model-artifact APIs. The root cause is that TransitionParser, AveragedPerceptron, PerceptronTagger, and maxent parameter APIs bypass pathsec enforcement by performing raw file operations on caller-controlled paths, allowing attack...

CVE-2026-81726 NLTK through 3.10.3 Path Traversal via Model-Artifact APIs

NLTK through 3.10.3 contains a path traversal vulnerability in model-artifact APIs that bypass pathsec enforcement by using raw file operations on caller-controlled paths. Attackers can read or write files outside allowed sandbox roots through TransitionParser, AveragedPerceptron, PerceptronTagge...

PT-2026-82621

Name of the Vulnerable Software and Affected Versions NLTK versions prior to 3.10.4 Description Path traversal occurs in model-artifact APIs when pathsec is enabled. The issue arises from the use of raw file operations on caller-controlled paths, which allows bypassing pathsec enforcement. This...

Linux Distros Unpatched Vulnerability : CVE-2026-81726

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - NLTK through 3.10.3 contains a path traversal vulnerability in model-artifact APIs that bypass pathsec enforcement by using raw file operations on...

GHSA-W5Q8-6JPP-4246 Duplicate Advisory: Corpus readers follow symlinks outside trusted roots despite pathsec enforcement

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-p4rw-rvv2-7xwr. This link is maintained to preserve external references. Original Description NLTK versions before 3.10.3 contain a path traversal vulnerability in corpus readers that reopen root-derived paths...

Directory Traversal

Overview nltk is a Natural Language Toolkit NLTK is a Python package for natural language processing. Affected versions of this package are vulnerable to Directory Traversal via the gettag method in nltk/corpus/reader/ipipan.py, which is the single choke point for channels, domains, categories, a...

Directory Traversal

Overview nltk is a Natural Language Toolkit NLTK is a Python package for natural language processing. Affected versions of this package are vulnerable to Directory Traversal in StreamBackedCorpusView that bypasses pathsec.ENFORCE by calling builtins.open directly instead of pathsec.open. Attacker...

Duplicate Advisory: Security Report: StreamBackedCorpusView Bypasses pathsec.ENFORCE - Arbitrary Local File Read

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-x5ph-mj9p-rfr8. This link is maintained to preserve external references. Original Description NLTK before 3.10.0 contains an arbitrary local file read vulnerability in StreamBackedCorpusView that bypasses...

Duplicate Advisory: NLTK: Symlink-based arbitrary file read in IPIPANCorpusReader, bypasses nltk.pathsec entirely

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-3hhw-38pf-pxj6. This link is maintained to preserve external references. Original Description nltk versions before 3.10.2 contain a symlink-based arbitrary file read vulnerability in IPIPANCorpusReader methods...

GHSA-8W48-H75V-CXPV Duplicate Advisory: Security Report: StreamBackedCorpusView Bypasses pathsec.ENFORCE - Arbitrary Local File Read

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-x5ph-mj9p-rfr8. This link is maintained to preserve external references. Original Description NLTK before 3.10.0 contains an arbitrary local file read vulnerability in StreamBackedCorpusView that bypasses...

PYSEC-2026-3730

NLTK before 3.10.0 contains an arbitrary local file read vulnerability in StreamBackedCorpusView that bypasses pathsec.ENFORCE by calling builtins.open directly instead of pathsec.open. Attackers who control the fileid argument can read arbitrary local files regardless of the ENFORCE setting,...

PYSEC-2026-3730

NLTK before 3.10.0 contains an arbitrary local file read vulnerability in StreamBackedCorpusView that bypasses pathsec.ENFORCE by calling builtins.open directly instead of pathsec.open. Attackers who control the fileid argument can read arbitrary local files regardless of the ENFORCE setting,...

CVE-2026-63312

NLTK before 3.10.0 contains an arbitrary local file read vulnerability in StreamBackedCorpusView that bypasses pathsec.ENFORCE by calling builtins.open directly instead of pathsec.open. Attackers who control the fileid argument can read arbitrary local files regardless of the ENFORCE setting,...

PYSEC-2026-3726

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,...

PYSEC-2026-3726

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,...

PYSEC-0000-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,...

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,...

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,...

UBUNTU-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,...