Nltk
By the Year
In 2024 there have been 0 vulnerabilities in Nltk . Nltk did not have any published security vulnerabilities last year.
| Year | Vulnerabilities | Average Score |
|---|---|---|
| 2024 | 0 | 0.00 |
| 2023 | 0 | 0.00 |
| 2022 | 1 | 7.50 |
| 2021 | 2 | 7.50 |
| 2020 | 0 | 0.00 |
| 2019 | 1 | 7.50 |
| 2018 | 0 | 0.00 |
It may take a day or so for new Nltk vulnerabilities to show up in the stats or in the list of recent security vulnerabilties. Additionally vulnerabilities may be tagged under a different product or component name.
Recent Nltk Security Vulnerabilities
nltk is vulnerable to Inefficient Regular Expression Complexity
CVE-2021-3842
7.5 - High
- January 04, 2022
nltk is vulnerable to Inefficient Regular Expression Complexity
ReDoS
NLTK (Natural Language Toolkit) is a suite of open source Python modules
CVE-2021-43854
7.5 - High
- December 23, 2021
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.
Resource Exhaustion
nltk is vulnerable to Inefficient Regular Expression Complexity
CVE-2021-3828
7.5 - High
- September 27, 2021
nltk is vulnerable to Inefficient Regular Expression Complexity
Incorrect Comparison
NLTK Downloader before 3.4.5 is vulnerable to a directory traversal, allowing attackers to write arbitrary files via a
CVE-2019-14751
7.5 - High
- August 22, 2019
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.
Directory traversal
