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Wed, 18 Feb 2026 19:15:00 +0000
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Wed, 18 Feb 2026 18:15:00 +0000
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| Description | A critical vulnerability exists in the NLTK downloader component of nltk/nltk, affecting all versions. The _unzip_iter function in nltk/downloader.py uses zipfile.extractall() without performing path validation or security checks. This allows attackers to craft malicious zip packages that, when downloaded and extracted by NLTK, can execute arbitrary code. The vulnerability arises because NLTK assumes all downloaded packages are trusted and extracts them without validation. If a malicious package contains Python files, such as __init__.py, these files are executed automatically upon import, leading to remote code execution. This issue can result in full system compromise, including file system access, network access, and potential persistence mechanisms. | |
| Title | Zip Slip Vulnerability in nltk/nltk Leading to Remote Code Execution | |
| Weaknesses | CWE-94 | |
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| Metrics |
cvssV3_0
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Projects
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Status: PUBLISHED
Assigner: @huntr_ai
Published:
Updated: 2026-02-18T19:10:44.959Z
Reserved: 2025-12-04T09:27:21.716Z
Link: CVE-2025-14009
Updated: 2026-02-18T19:10:39.781Z
Status : Received
Published: 2026-02-18T18:24:19.410
Modified: 2026-02-18T20:18:31.207
Link: CVE-2025-14009
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OpenCVE Enrichment
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