CVE-2026-79674

EUVD-2026-65524
NLTK versions before 3.10.3 contain a path sandbox bypass vulnerability in corpus-reader constructors that allows attackers to read files outside the intended data root. Attackers can supply arbitrary corpus root paths to LinThesaurusCorpusReader and PanLexLiteCorpusReader constructors to access filesystem content and SQLite databases outside the pathsec sandbox boundary.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.2 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 30.69%
Affected Products (NVD)
VendorProductVersion
nltknltk
𝑥
< 3.10.3
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
nltk
bookworm
postponed
forky
3.10.3-1
fixed
sid
3.10.3-1
fixed
trixie
no-dsa
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
nltk
bionic
needs-triage
focal
needs-triage
jammy
needs-triage
noble
needs-triage
resolute
needs-triage
trusty
needs-triage
xenial
needs-triage
Common Weakness Enumeration
References
https://github.com/nltk/nltk/security/advisories/GHSA-3gq4-3j92-5w49
https://www.vulncheck.com/advisories/nltk-path-traversal-via-corpus-reader-constructors
https://github.com/nltk/nltk/security/advisories/GHSA-3gq4-3j92-5w49