Tóm tắt nhanh
- CVE-2026-12261 là lỗ hổng mức TRUNG BÌNH (CVSS 6.5) ảnh hưởng nltk, nltk (nltk).
- Xác suất bị khai thác trong 30 ngày tới (EPSS): 0.21%, cao hơn 11.3% các lỗ hổng khác.
- Cách xử lý: cập nhật lên 3.10.0 hoặc mới hơn.
| Gói / sản phẩm | Phiên bản bị ảnh hưởng | Phiên bản đã vá |
|---|
| nltk PyPI | < 3.10.0
| 3.10.0
|
| nltk | ≤ 3.9.4
| Chưa có bản vá |
Mô tả
A vulnerability in nltk.downloader in nltk/nltk versions <= 3.9.4 allows for cross-package resource and model poisoning. The downloader extracts package archives into shared namespaces such as corpora/ and taggers/ instead of package-isolated roots, and validates package integrity only after the archive has been written and extracted. This design flaw enables one package to overwrite another package's trusted resources within the same namespace, making the changes immediately active through ordinary NLTK APIs. This issue persists across fresh interpreter restarts and can affect downstream workflows, including machine learning pipelines and reproducibility-sensitive environments.
Mô tả của NVD
A vulnerability in `nltk.downloader` in nltk/nltk versions <= 3.9.4 allows for cross-package resource and model poisoning. The downloader extracts package archives into shared namespaces such as `corpora/` and `taggers/` instead of package-isolated roots, and validates package integrity only after the archive has been written and extracted. This design flaw enables one package to overwrite another package's trusted resources within the same namespace, making the changes immediately active through ordinary NLTK APIs. This issue persists across fresh interpreter restarts and can affect downstream workflows, including machine learning pipelines and reproducibility-sensitive environments.
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