nltk: NLTK versions before 3.10.3 contain a remote code execution vulnerability in allowlisted pickle loaders that trust en...
CVE-2026-79657 is fixed in nltk on 1 platform by DEBIAN-CVE-2026-79657 (version 3.10.3-1), released August 27, 2026. It is not reported as exploited. Patch Radar priority: Routine.
NLTK versions before 3.10.3 contain a remote code execution vulnerability in allowlisted pickle loaders that trust entire module namespaces instead of specific safe callables. Attackers can craft malicious pickle payloads invoking dangerous in-namespace functions like ReppTokenizer._execute and numpy.f2py.crackfortran.myeval through pickle REDUCE to execute arbitrary commands during model or tokenizer artifact loading.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| nltk · Debian 14 | 3.10.3-1 | DEBIAN-CVE-2026-79657 | Aug 27, 2026 |
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