nltk vulnerabilities

Browse known CVEs and advisories by package and ecosystem. Severity tells you the worst case. What determines real risk is whether the vulnerable code actually runs in your applications.

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CVE-IDSeverityPackage summary
CVE-2026-54293Highnltk: Natural Language Toolkit (NLTK): URL-Encoded Path Traversal in nltk.data.load() Allows Arbitrary…CVE-2026-33236Highnltk: NLTK has a Downloader Path Traversal Vulnerability (AFO) - Arbitrary File OverwriteCVE-2026-33231Highnltk: Unauthenticated remote shutdown in nltk.app.wordnet_appCVE-2026-33230Mediumnltk: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in nltkGHSA-RF74-V2FM-23PWMediumnltk: Natural Language Toolkit (NLTK) has unbounded recursion in JSONTaggedDecoder.decode_obj() may cause…CVE-2026-0846Highnltk: NLTK has Arbitrary File Read via Absolute Path Input in nltk.util.filestring()CVE-2026-0847Highnltk: NLTK has a Path Traversal issueCVE-2025-14009Criticalnltk: NLTK has a Zip Slip VulnerabilityCVE-2024-39705Highnltk: ntlk unsafe deserialization vulnerabilityCVE-2021-3842Highnltk: NLTK Vulnerable to REDoSCVE-2021-43854Highnltk: Inefficient Regular Expression Complexity in nltk (word_tokenize, sent_tokenize)CVE-2021-3828Highnltk: NLTK Vulnerable to REDoSCVE-2019-14751Highnltk: NLTK Vulnerable To Path Traversal

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