Resources Downloaded over Insecure Protocol Affecting nltk package, versions [,3.9.3)
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-19233539
- published23 Aug 2026
- disclosed22 Aug 2026
- creditUnknown
Introduced: 22 Aug 2026
NewCVE-2026-63310 (opens in a new tab)How to fix?
Upgrade nltk to version 3.9.3 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 Resources Downloaded over Insecure Protocol via the downloader. An attacker can execute arbitrary code and compromise system integrity by injecting malicious package contents during a man-in-the-middle attack or DNS poisoning, which are then extracted without validation.