CVE-2024-39705

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-06-27 · updated 2026-06-17
Weakness: CWE-502

Description

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.

Affected products

nltk: through 3.8.1

References

https://github.com/nltk/nltk/issues/2522
https://github.com/nltk/nltk/issues/3266
https://www.vicarius.io/vsociety/posts/rce-in-python-nltk-cve-2024-39705-39706
https://github.com/nltk/nltk/issues/2522
https://github.com/nltk/nltk/issues/3266
https://www.vicarius.io/vsociety/posts/rce-in-python-nltk-cve-2024-39705-39706

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