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

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

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...

Inefficient Regular Expression Complexity in nltk/nltk

Description nltk is vulnerable to ReDoS attack because of ^-?0-9+.0-9+?$ regex. If attacker succeeds to use malicious payload against RegexpTagger used in function getpostagger and maltregextagger, it will cause a nasty DoS. Proof of Concept // PoC.py import re, time pattern =...

NLTK Vulnerable to REDoS

The nltk package is vulnerable to ReDoS regular expression denial of service. An attacker that is able to provide as an input to the readcomparisonblockhttps://github.com/nltk/nltk/blob/23f4b1c4b4006b0cb3ec278e801029557cec4e82/nltk/corpus/reader/comparativesents.pyL259 function in the file...

GHSA-2WW3-FXVQ-293J NLTK Vulnerable to REDoS

The nltk package is vulnerable to ReDoS regular expression denial of service. An attacker that is able to provide as an input to the readcomparisonblockhttps://github.com/nltk/nltk/blob/23f4b1c4b4006b0cb3ec278e801029557cec4e82/nltk/corpus/reader/comparativesents.pyL259 function in the file...

CVE-2021-3828

nltk is vulnerable to Inefficient Regular Expression Complexity...

CVE-2021-3828

nltk is vulnerable to Inefficient Regular Expression Complexity...

CVE-2021-3828

nltk is vulnerable to Inefficient Regular Expression Complexity...

CVE-2021-3828

nltk is vulnerable to Inefficient Regular Expression Complexity...

PYSEC-2021-356

nltk is vulnerable to Inefficient Regular Expression Complexity...

CVE-2021-3828 Inefficient Regular Expression Complexity in nltk/nltk

nltk is vulnerable to Inefficient Regular Expression Complexity...

CVE-2021-3828

CVE-2021-3828 affects the Python nltk package with a vulnerability to ReDoS (inefficient regular-expression handling). Connected sources show fixes in newer nltk releases (e.g., updates to 3.6.x/3.7, and OpenSUSE/SUSE advisories mentioning python-nltk fixes) and advisories noting the issue in Ubu...

CVE-2021-3828

nltk is vulnerable to Inefficient Regular Expression Complexity...

PT-2021-22014 · Pypi +3 · Nltk +3

Name of the Vulnerable Software and Affected Versions: nltk affected versions not specified Description: The nltk package is vulnerable to ReDoS regular expression denial of service. An attacker that is able to provide input to the checkComparisonBlock function, specifically the read comparison...

Inefficient Regular Expression Complexity in nltk/nltk

✍️ Description The nltk package is vulnerable to ReDoS regular expression denial of service. An attacker that is able to provide as an input to the readcomparisonblock function in the file "nltk/corpus/reader/comparativesents.py" may cause an application to consume an excessive amount of CPU. Belo...