PyPI/nltk CVE-2026-12252: high 7.8, EPSS 0.19%

In nltk/nltk versions 3.9.3 and earlier, five Stanford interface classes (StanfordPOSTagger, StanfordNERTagger, StanfordParser, StanfordDependencyParser, and StanfordNeuralDependencyParser) are vulner

Action: Upgrade nltk to 3.9.4 or later.

pip install nltk==3.9.4

Affected

Fixed versions

Sources

• osv: PYSEC-2026-2085
• https://huntr.com/bounties/f5c93982-0cc9-4e2e-bb85-1b6ab29a2efb
• https://github.com/advisories/GHSA-9r6g-266r-89x4

CVE-2026-12252 · published 2026-07-04T02:16:23.603Z · modified 2026-10-15T14:45:11.790616373Z · JSON