High severity · published Sep 27, 2021
CVE-2021-3828
nltk is vulnerable to Inefficient Regular Expression Complexity
7.5
CVSS
1.6%
EPSS
No
On KEV
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.6% · higher than 76% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NL
Nltk · Nltk
through 3.6.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-3828
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-3828
Patch
https://github.com/nltk/nltk/commit/277711ab1dec729e626b27aab6fa35ea5efbd7e6
Exploit
https://huntr.dev/bounties/d19aed43-75bc-4a03-91a0-4d0bb516bc32
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