5.3
Moyenne
CVE-2026-12259 In nltk version 3.9.4, the `nltk.downloader.Downloader._download_package()` function writes downloaded package bytes…
Description
In nltk version 3.9.4, the `nltk.downloader.Downloader._download_package()` function writes downloaded package bytes to disk and may extract them before enforcing SHA-256 or MD5 checksum validation. This allows an attacker to tamper with the package response body for `info.url` through a compromised mirror, malicious proxy, or other source-substitution condition, leading to the installation of attacker-controlled package bytes. The vulnerability can result in malicious corpus or model content being trusted by downstream users or applications.
Produits et versions touchés
| Produit | Versions touchées | Corrigé en |
|---|---|---|
| nltk/nltk | Versions non publiées |
Autres CVE de nltk/nltk
Les 12 CVE de nltk/nltk →
CVE-2026-12372
A Server-Side Request Forgery (SSRF) vulnerability exists in nltk/nltk versions 3.9.4 and the current develop branch
3.7
Faible
CVE-2026-12261
A vulnerability in `nltk.downloader` in nltk/nltk…
5.3
Moyenne
CVE-2026-12252
In nltk/nltk versions 3.9.3 and earlier, five Stanford interface classes (StanfordPOSTagger, StanfordNERTagger,…
7.8
Élevée
CVE-2026-12243
NLTK version 3.9.4 is vulnerable to a path traversal attack due to an incomplete fix for GitHub Issue #3504
7.5
Élevée