USN-5215-1: NLTK vulnerability

Srikantha Prathi discovered that NLTK incorrectly handled specially crafted input. An attacker could use this vulnerability to cause a denial of service...

NLTK Vulnerable to REDoS

NLTK is vulnerable to REDoS in some RegexpTaggers used in the functions getpostagger and maltregextagger...

Inefficient Regular Expression Complexity in nltk (word_tokenize, sent_tokenize)

Impact The vulnerability is present in PunktSentenceTokenizer, senttokenize and wordtokenize. Any users of this class, or these two functions, are vulnerable to a Regular Expression Denial of Service ReDoS attack. In short, a specifically crafted long input to any of these vulnerable functions wi...

Regular Expression Denial Of Service (ReDoS)

nltk is vulnerable to regular expression denial of service. The vulnerability exists due to the inefficient regex pattern used in maltregextagger function of malt.py and getpostagger function of glue.py, allowing an attacker to cause an application crash by providing malicious payload against...

DEBIAN-CVE-2021-3842

nltk is vulnerable to Inefficient Regular Expression Complexity...

CVE-2021-3842

nltk is vulnerable to Inefficient Regular Expression Complexity...

CVE-2021-3842

nltk is vulnerable to Inefficient Regular Expression Complexity...

CVE-2021-3842

nltk is vulnerable to Inefficient Regular Expression Complexity...

Design/Logic Flaw

nltk is vulnerable to Inefficient Regular Expression Complexity...

CVE-2021-3842

CVE-2021-3842 affects the Python NLTK package; the vulnerability is an Inefficient Regular Expression Complexity (REDoS) in certain RegexpTaggers, leading to potential denial of service. Exposed components: nltk/nltk (regex processing). Public sources assign a high severity (CVSS v3.1 base 7.5; i...

CVE-2021-3842

nltk is vulnerable to Inefficient Regular Expression Complexity...

CVE-2021-3842 Inefficient Regular Expression Complexity in nltk/nltk

nltk is vulnerable to Inefficient Regular Expression Complexity...

Regular Expression Denial Of Service (ReDoS)

nltk is vulnerable to regular expression denial of service. The vulnerability exists in PunktSentenceTokenizer function in punkt.py which allows an attacker to cause an application crash...

CVE-2021-43854

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...

CVE-2021-43854

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...

CVE-2021-43854

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...

Input validation

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...

CVE-2021-43854 Inefficient Regular Expression Complexity in nltk

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...

CVE-2021-43854

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...

CVE-2021-43854

CVE-2021-43854 affects the Python package NLTK. Versions prior to 3.6.5 are vulnerable to a Regular Expression Denial of Service (ReDoS) in the affected tokenizers: PunktSentenceTokenizer, sent_tokenize, and word_tokenize. The issue arises from inefficient regex backtracking on crafted inputs, ca...