Vulnerability Details : CVE-2021-3828
nltk is vulnerable to Inefficient Regular Expression Complexity
Products affected by CVE-2021-3828
- cpe:2.3:a:nltk:nltk:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-3828
0.10%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 43 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-3828
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
huntr.dev | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2021-3828
-
The product compares two entities in a security-relevant context, but the comparison is incorrect, which may lead to resultant weaknesses.Assigned by: nvd@nist.gov (Primary)
-
The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles.Assigned by: security@huntr.dev (Secondary)
References for CVE-2021-3828
-
https://github.com/nltk/nltk/commit/277711ab1dec729e626b27aab6fa35ea5efbd7e6
Resolved ReDoS vulnerability in Corpus Reader (#2816) · nltk/nltk@277711a · GitHubPatch;Third Party Advisory
-
https://huntr.dev/bounties/d19aed43-75bc-4a03-91a0-4d0bb516bc32
huntr: Inefficient Regular Expression Complexity Python Vulnerability in nltkExploit;Patch;Third Party Advisory
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