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Medium nvd · CVE-2026-12261

CVE-2026-12261: A vulnerability in `nltk.downloader` in nltk/nltk versions <= 3.9.4 allows for cross-package resource and model poisonin

Published Aug 7, 2026 CVSS 5.3

A vulnerability in nltk.downloader in nltk/nltk versions

Affected AI Products

machine learning model poisoning
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