CVE-2019-14751

mediumpriority · track · 42EPSS 0.057 · 93 %ileexploit · PoCEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

5.67% (93rd) EPSS

CVSS 5 · medium

Is it mine?

5 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-28

NLTK Downloader before 3.4.5 is vulnerable to a directory traversal, allowing attackers to write arbitrary files via a ../ (dot dot slash) in an NLTK package (ZIP archive) that is mishandled during extraction.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nsecondary · OSV

v3.07.1highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:Psecondary · CVSS-BT (t0sche)

v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nsecondary · FSTEC (BDU) RU

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-22USprimaryCWE-22USCWE-22US

exploits (1)

Public proof-of-concept and weaponised exploit code.

mssalvatore/CVE-2019-14751_PoCA Proof of Concept for CVE-2019-14751PoC · poc_in_github

affected products (5)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
NLTK Project NLTK≤ 3.4.5fstec_bduRU
АО «НППКТ» ОСОН ОСнова Оnyx≤ 2.9fstec_bduRU
nltk nltk< 3.4.5nvdUScpe:2.3:a:nltk:nltk:*:*:*:*:*:*:*:*
PyPI nltk< 3.4.5osvUSpkg:pypi/nltk

advisories (2)

Vendor and ecosystem advisories describing this.

GHSA-mr7p-25v2-35wrNLTK Vulnerable To Path Traversal2019-08-23ghsa · osvUS
NLTK Downloader before 3.4.5 is vulnerable to a directory traversal, allowing attackers to write arbitrary files via a `../` (dot dot slash) in an NLTK package (ZIP archive) that is mishandled during extraction.
PYSEC-2019-1062019-08-22vendor · osvUS
NLTK Downloader before 3.4.5 is vulnerable to a directory traversal, allowing attackers to write arbitrary files via a ../ (dot dot slash) in an NLTK package (ZIP archive) that is mishandled during extraction.

also known as (7)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu osv nvd NVD CVE.org MITRE

published 2019-08-22modified 2026-06-17

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+12533 more

references (29)

External citations — patches, advisories, analysis.

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