CVE-2024-39705High· 7.5▾ Twilightntlk unsafe deserialization vulnerability
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0.3 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via OSV
Last analysed / modified upstream
1.3%
NLTK through 3.8.1 allows remote code execution if untrusted packages have pickled Python code, and the integrated data package download functionality is used. This affects, for example, averaged_perceptron_tagger and punkt.
nltk < 3.9Upgrade to a patched release:
nltk 3.9Connected by shared product, vendor, weakness, or advisory.
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CVE-2026-78683CriticalNLTK: Unsafe Pickle Deserialization in TransitionParser Allows Remote Code Execution