CVE-2021-3842

Public Exploit
Inefficient Regular Expression Complexity in nltk/nltk

Description

nltk is vulnerable to Inefficient Regular Expression Complexity

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.50%
Third-Party Advisory github.com Third-Party Advisory huntr.dev
Affected: nltk nltk/nltk
Published at:
Updated at:

References

Link Tags
https://huntr.dev/bounties/761a761e-2be2-430a-8d92-6f74ffe9866a issue tracking patch exploit third party advisory
https://github.com/nltk/nltk/commit/2a50a3edc9d35f57ae42a921c621edc160877f4d third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-3842?
CVE-2021-3842 has been scored as a high severity vulnerability.
How to fix CVE-2021-3842?
To fix CVE-2021-3842, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-3842 being actively exploited in the wild?
It is possible that CVE-2021-3842 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-3842?
CVE-2021-3842 affects nltk nltk/nltk.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.