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
VulnCheckCNA
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: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
nltknltk
𝑥
< 3.10.3
CNA
Debian logo
Debian Releases
Debian Product
Codename
nltk
bookworm
vulnerable
bullseye
vulnerable
forky
3.10.3-1
fixed
sid
3.10.3-1
fixed
trixie
vulnerable
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