CVE-2026-71513

A flaw was found in NLTK. A remote attacker can achieve remote code execution by crafting untrusted transition-parser models. This vulnerability exists in the AllowlistUnpickler, which incorrectly validates only the pickle module string and not the global name. This allows attackers to bypass the...

Deserialization of Untrusted Data

Overview nltk is a Natural Language Toolkit NLTK is a Python package for natural language processing. Affected versions of this package are vulnerable to Deserialization of Untrusted Data in nltk.picklesec.AllowlistUnpickler, nltk.tokenize.punkt.punktpickleload, and...

Deserialization of Untrusted Data

Overview nltk is a Natural Language Toolkit NLTK is a Python package for natural language processing. Affected versions of this package are vulnerable to Deserialization of Untrusted Data via unsafe deserialization in AllowlistUnpickler. An attacker can execute arbitrary commands by supplying a...

GHSA-5GH2-94QG-QPPQ NLTK AllowlistUnpickler dotted-name validation bypass allows remote code execution

NLTK before 3.10.3 contains a remote code execution vulnerability in AllowlistUnpickler that validates only the pickle module string and not the global name, allowing attackers to resolve dotted names by attribute traversal to callables outside the allowlisted namespace. Attackers can craft...

CVE-2026-71513

NLTK before 3.10.3 contains a remote code execution vulnerability in AllowlistUnpickler that validates only the pickle module string and not the global name, allowing attackers to resolve dotted names by attribute traversal to callables outside the allowlisted namespace. Attackers can craft...

UBUNTU-CVE-2026-71513

NLTK before 3.10.3 contains a remote code execution vulnerability in AllowlistUnpickler that validates only the pickle module string and not the global name, allowing attackers to resolve dotted names by attribute traversal to callables outside the allowlisted namespace. Attackers can craft...

CVE-2026-71513

NLTK before 3.10.3 contains a remote code execution vulnerability in AllowlistUnpickler that validates only the pickle module string and not the global name, allowing attackers to resolve dotted names by attribute traversal to callables outside the allowlisted namespace. Attackers can craft...

CVE-2026-71513 NLTK 3.10.0 through 3.10.2 Remote Code Execution via AllowlistUnpickler Dotted-Name Bypass

NLTK before 3.10.3 contains a remote code execution vulnerability in AllowlistUnpickler that validates only the pickle module string and not the global name, allowing attackers to resolve dotted names by attribute traversal to callables outside the allowlisted namespace. Attackers can craft...

EUVD-2026-64296

NLTK before 3.10.3 contains a remote code execution vulnerability in AllowlistUnpickler that validates only the pickle module string and not the global name, allowing attackers to resolve dotted names by attribute traversal to callables outside the allowlisted namespace. Attackers can craft...

CVE-2026-71513

NLTK versions 3.10.0 through 3.10.2 contain a remote code execution vulnerability in the AllowlistUnpickler component (picklesec.py). The root cause is that the allowlist validation checks only the pickle module string but not the global name, enabling attackers to resolve dotted names via attrib...

CVE-2026-71513 NLTK 3.10.0 through 3.10.2 Remote Code Execution via AllowlistUnpickler Dotted-Name Bypass

NLTK before 3.10.3 contains a remote code execution vulnerability in AllowlistUnpickler that validates only the pickle module string and not the global name, allowing attackers to resolve dotted names by attribute traversal to callables outside the allowlisted namespace. Attackers can craft...

Linux Distros Unpatched Vulnerability : CVE-2026-71513

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - NLTK before 3.10.3 contains a remote code execution vulnerability in AllowlistUnpickler that validates only the pickle module string and not the global name,...

PT-2026-79554

Name of the Vulnerable Software and Affected Versions NLTK versions prior to 3.10.3 Description An issue exists in the AllowlistUnpickler component that fails to validate the global name, validating only the pickle module string. This allows attackers to resolve dotted names via attribute travers...