CVE-2019-14751_PoC

CVE-2019-14751PoC CVE-2019-14751을 위한 개념 증명PoC 취약점 설명 NLTK Downloader 3.5 이전 버전은 디렉터리 트래버설directory traversal에 취약하여, 압축 해제 과정에서 부적절하게 처리되는 NLTK 패키지ZIP 아카이브 내의 ../ dot dot slash를 통해 공격자가 임의의 파일을 쓸 수 있습니다. 자세한 내용은 다음을 참조하십시오: https://salvatoresecurity.com/zip-slip-in-nltk-cve-2019-14751/ 재현 단계 1...

CVE-2026-12261

A flaw was found in the nltk.downloader component of NLTK. This vulnerability allows for cross-package resource and model poisoning. The downloader extracts package archives into shared namespaces and only validates package integrity after extraction. This design flaw enables one package to...

CVE-2026-12261

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...

EUVD-2026-54393

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...

CVE-2026-12261

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...

CVE-2026-12261

The CVE concerns nltk.downloader in nltk/nltk ≤ 3.9.4. The downloader extracts package archives into shared namespaces (corpora/ and taggers/) instead of package-isolated roots and validates integrity only after extraction. This design flaw enables one package to overwrite another package’s trust...

CVE-2026-12259

The CVE affects nltk 3.9.4: nltk.downloader.Downloader._download_package() can write package bytes to disk and may extract them before SHA-256/MD5 checks, enabling tampering via compromised mirrors or proxies. This could lead to installation of attacker-controlled package bytes (potentially malic...

Security Bulletin: Multiple vulnerabilities in IBM watsonx Orchestrate with watsonx Assistant Cartridge

Summary Multiple vulnerabilities were addressed in IBM watsonx Orchestrate with watsonx Assistant Cartridge version 5.3.3 Vulnerability Details CVEID:CVE-2026-28498 DESCRIPTION: Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to version 1.6.9, a library-level...

Security Bulletin: Maximo AI Service uses multiple third party dependencies which is vulnerable to multiple CVEs.

Summary Maximo AI Service uses nltk-3.9.1-py3-none-any.whl, mlflow-3.1.0-py3-none-any.whl, and spring-security-web-6.5.7.jar, which are vulnerable to CVE-2025-14009, CVE-2026-2635, CVE-2026-0848, and CVE-2026-22732. This bulletin contains information regarding how to address the vulnerabilities...

Security Bulletin: IBM Watson Speech Services Cartridge is vulnerable to code injection in NLTK [CVE-2025-14009]

Summary IBM Watson Speech Services Cartridge is vulnerable to code injection in NLTK, due to an issue in in the NLTK downloader component of nltk/nltk that causes the unzipiter function in nltk/downloader.py to fail to perform path validation or security checks CVE-2025-14009. NLTK is used in our...

Security Bulletin: Multiple vulnerabilities in IBM watsonx Orchestrate Developer Edition

Summary Multiple vulnerabilities were addressed in IBM watsonx Orchestrate Developer Edition version 2.7.0 Vulnerability Details CVEID:CVE-2025-14009 DESCRIPTION: A critical vulnerability exists in the NLTK downloader component of nltk/nltk, affecting all versions. The unzipiter function in...

CVE-2026-33236

NLTK Natural Language Toolkit is a suite of open source Python modules, data sets, and tutorials supporting research and development in Natural Language Processing. In versions 3.9.3 and prior, the NLTK downloader does not validate the subdir and id attributes when processing remote XML index...

CVE-2026-33236

NLTK Natural Language Toolkit is a suite of open source Python modules, data sets, and tutorials supporting research and development in Natural Language Processing. In versions 3.9.3 and prior, the NLTK downloader does not validate the subdir and id attributes when processing remote XML index...

CVE-2026-33236 NLTK has a Downloader Path Traversal Vulnerability (AFO) - Arbitrary File Overwrite

NLTK Natural Language Toolkit is a suite of open source Python modules, data sets, and tutorials supporting research and development in Natural Language Processing. In versions 3.9.3 and prior, the NLTK downloader does not validate the subdir and id attributes when processing remote XML index...

NLTK Downloader: Arbitrary File Write / Remote Code Execution via XML Attribute Injection in Package Index

Summary Field| Value ---|--- Component| nltk.downloader.Package Affected Version| NLTK element in the remote XML index contains a filename="..." attribute, it flows into kw and overwrites the safe value. The overridden filename is used directly at line 679 as the filesystem write destination:...

Linux Distros Unpatched Vulnerability : CVE-2025-14009

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A critical vulnerability exists in the NLTK downloader component of nltk/nltk, affecting all versions. The unzipiter function in nltk/downloader.py uses...

GHSA-7P94-766C-HGJP NLTK has a Zip Slip Vulnerability

A critical vulnerability exists in the NLTK downloader component of nltk/nltk, affecting all versions. The unzipiter 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...

PYSEC-2026-96

A critical vulnerability exists in the NLTK downloader component of nltk/nltk, affecting all versions. The unzipiter 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...

UBUNTU-CVE-2025-14009

A critical vulnerability exists in the NLTK downloader component of nltk/nltk, affecting all versions. The unzipiter 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...

CVE-2025-14009 Zip Slip Vulnerability in nltk/nltk Leading to Remote Code Execution

A critical vulnerability exists in the NLTK downloader component of nltk/nltk, affecting all versions. The unzipiter 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...