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EUVD-2021-0148

🗓️ 07 Oct 2025 00:30:54Reported by EUVDType 
euvd
 euvd
🔗 euvd.enisa.europa.eu👁 1 Views

NLTK versions before 3.6.5 are vulnerable to ReDoS attacks affecting tokenization functions.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
Circl
CVE-2021-43854
23 Dec 202120:21
circl
CNNVD
Natural Language Toolkit 资源管理错误漏洞
23 Dec 202100:00
cnnvd
CNVD
Natural Language Toolkit Resource Management Error Vulnerability
27 Dec 202100:00
cnvd
CVE
CVE-2021-43854
23 Dec 202117:55
cve
Cvelist
CVE-2021-43854 Inefficient Regular Expression Complexity in nltk
23 Dec 202117:55
cvelist
Debian CVE
CVE-2021-43854
23 Dec 202117:55
debiancve
Github Security Blog
Inefficient Regular Expression Complexity in nltk (word_tokenize, sent_tokenize)
6 Jan 202217:38
github
NVD
CVE-2021-43854
23 Dec 202118:15
nvd
OpenVAS
Ubuntu: Security Advisory (USN-7365-1)
24 Mar 202500:00
openvas
OSV
DEBIAN-CVE-2021-43854
23 Dec 202118:15
osv
Rows per page
[
  {
    "enisaIdVendor": [
      {
        "id": "85f15521-3ca0-3f5b-962f-cc38428b63ef",
        "vendor": {
          "name": "nltk"
        }
      }
    ],
    "enisaIdProduct": [
      {
        "id": "364eabaa-f09a-314d-a720-404925091dff",
        "product": {
          "name": "nltk"
        },
        "product_version": "< 3.6.5"
      }
    ]
  }
]

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07 Oct 2025 00:30Current
7.4High risk
Vulners AI Score7.4
CVSS 3.17.5
CVSS 25
EPSS0.00144
1