Skip to main content

Mondoo Vulnerability Intelligence

Curated by Mondoo Research, enhanced with AI

Resources

Search Vulnerabilities
Trending CVEs
Browse Ecosystems
Terminology
Blog

Open Source

cnquery
cnspec

Star us on GitHub!

Company

Mondoo Platform
About
Contact

© 2026 Mondoo, Inc.

Privacy Policy Terms of Service Imprint

Vulnerability Intelligence

Vulnerability IntelligenceCVE-2021-3828

CVE-2021-3828

HIGH7.5

Inefficient Regular Expression Complexity in nltk/nltk

Published Sep 27, 2021

Modified 1 years ago

Details

nltk is vulnerable to Inefficient Regular Expression Complexity

References

https://github.com/nltk/nltk/commit/277711ab1dec729e626b27aab6fa35ea5efbd7e6

https://huntr.dev/bounties/d19aed43-75bc-4a03-91a0-4d0bb516bc32

https://www.cve.org/CVERecord?id=CVE-2021-3828

CVSS Analysis

CVSS v3.1

7.5

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Privileges Required

NonePR:N

User Interaction

NoneUI:N

Scope

Scope

UnchangedS:U

Impact

Confidentiality

NoneC:N

Integrity

NoneI:N

Availability

HighA:H

7.5/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

Resource Management

ReDoS (Regex DoS)

Ecosystems

Timeline

PublishedSep 27, 2021

ModifiedAug 3, 2024

CVE-2021-3828 | Mondoo Vulnerability Intelligence