// For flags

CVE-2021-3828

Inefficient Regular Expression Complexity in nltk/nltk

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

nltk is vulnerable to Inefficient Regular Expression Complexity

nltk es vulnerable a una Complejidad de Expresión Regular Ineficiente

*Credits: Srikanth Prathi (@srikanthprathi), Tom Aarsen (@tomaarsen)
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-09-24 CVE Reserved
  • 2021-09-27 CVE Published
  • 2024-06-12 EPSS Updated
  • 2024-08-03 CVE Updated
  • 2024-08-03 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-697: Incorrect Comparison
  • CWE-1333: Inefficient Regular Expression Complexity
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Nltk
Search vendor "Nltk"
 Nltk
Search vendor "Nltk" for product "Nltk"
 <= 3.6.3
Search vendor "Nltk" for product "Nltk" and version " <= 3.6.3"
-
Affected