CVE-2026-81727 NLTK before 3.10.3 Hardlink File Overwrite via downloader
| Reporter | Title | Published | Views | Family All 27 |
|---|---|---|---|---|
 | The vulnerability of the `nltk.downloader.Downloader.download` and `nltk.downloader.Downloader.incr_download` components of the NLTK library, which are used for symbolic and statistical processing of natural language, allows attackers to bypass existing security mechanisms and gain access to write and delete any files they desire. | 1 Sep 202600:00 | – | bdu_fstec |
 | CVE-2026-81727 vulnerabilities | 4 Sep 202620:26 | – | cgr |
 | CVE-2026-81727 | 2 Sep 202616:35 | – | circl |
 | CVE-2026-81727 | 27 Aug 202614:51 | – | cve |
 | CVE-2026-81727 | 27 Aug 202614:51 | – | debiancve |
 | EUVD-2026-67077 | 2 Sep 202614:35 | – | euvd |
 | Duplicate Advisory: Downloader.download follows hardlinks and overwrites outside-root files | 27 Aug 202618:32 | – | github |
| NLTK: Downloader.download follows hardlinks and overwrites outside-root files | 2 Sep 202614:35 | – | github |
 | CVE-2026-81727 | 27 Aug 202617:21 | – | nvd |
 | CGA-MHCH-52M6-PP32 | 2 Sep 202622:13 | – | osv |
10
[
{
"vendor": "nltk",
"product": "nltk",
"defaultStatus": "unaffected",
"packageURL": "pkg:pypi/nltk",
"versions": [
{
"version": "0",
"status": "affected",
"versionType": "semver",
"lessThan": "3.10.3"
},
{
"version": "3.10.3",
"status": "unaffected",
"versionType": "semver"
}
]
}
]Data
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27 Aug 2026 14:51Current
CVSS 46.9
CVSS 3.17.1
EPSS0.00135