Insecure Default Initialization of Resource Affecting nltk package, versions [,3.10.0)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PYTHON-NLTK-19233414
- published23 Aug 2026
- disclosed22 Aug 2026
- creditUnknown
Introduced: 22 Aug 2026
NewCVE-2026-62388 (opens in a new tab)How to fix?
Upgrade nltk to version 3.10.0 or higher.
Overview
nltk is a Natural Language Toolkit (NLTK) is a Python package for natural language processing.
Affected versions of this package are vulnerable to Insecure Default Initialization of Resource via disabled security enforcement in pathsec.py. An attacker can bypass protections against path traversal and unsafe pickle deserialization because NLTK defaults ENFORCE to False. In this configuration, failed security validation checks only generate warnings instead of rejecting malicious input, allowing operations that violate the intended security restrictions to continue.