Search criteria
4 vulnerabilities by nltk
CVE-2021-3842 (GCVE-0-2021-3842)
Vulnerability from cvelistv5 – Published: 2022-01-04 14:50 – Updated: 2024-08-03 17:09
VLAI?
Summary
nltk is vulnerable to Inefficient Regular Expression Complexity
Severity ?
7.5 (High)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
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CVE-2021-43854 (GCVE-0-2021-43854)
Vulnerability from cvelistv5 – Published: 2021-12-23 17:55 – Updated: 2024-08-04 04:10
VLAI?
Summary
NLTK (Natural Language Toolkit) is a suite of open source Python modules, data sets, and tutorials supporting research and development in Natural Language Processing. Versions prior to 3.6.5 are vulnerable to regular expression denial of service (ReDoS) attacks. The vulnerability is present in PunktSentenceTokenizer, sent_tokenize and word_tokenize. Any users of this class, or these two functions, are vulnerable to the ReDoS attack. In short, a specifically crafted long input to any of these vulnerable functions will cause them to take a significant amount of execution time. If your program relies on any of the vulnerable functions for tokenizing unpredictable user input, then we would strongly recommend upgrading to a version of NLTK without the vulnerability. For users unable to upgrade the execution time can be bounded by limiting the maximum length of an input to any of the vulnerable functions. Our recommendation is to implement such a limit.
Severity ?
7.5 (High)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
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CVE-2021-3828 (GCVE-0-2021-3828)
Vulnerability from cvelistv5 – Published: 2021-09-27 12:25 – Updated: 2024-08-03 17:09
VLAI?
Summary
nltk is vulnerable to Inefficient Regular Expression Complexity
Severity ?
7.5 (High)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
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Credits
Srikanth Prathi (@srikanthprathi)
Tom Aarsen (@tomaarsen)
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CVE-2019-14751 (GCVE-0-2019-14751)
Vulnerability from cvelistv5 – Published: 2019-08-22 15:59 – Updated: 2024-08-05 00:26
VLAI?
Summary
NLTK Downloader before 3.4.5 is vulnerable to a directory traversal, allowing attackers to write arbitrary files via a ../ (dot dot slash) in an NLTK package (ZIP archive) that is mishandled during extraction.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
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