High 8.2Published Aug 25, 2026

CVE-2026-79674NLTK 3.10.2 Path Traversal via corpus-reader constructors

Updated under an hour ago (2026-10-19 10:20 UTC)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 8.2 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Weakness (CWE): CWE-73
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Analyzed
Record last updated: Aug 25, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

nltk nltk nltk:nltk (from the name)	before 3.10.3; 3.10.3 not affected	CNA record
nltk nltk nltk:nltk	before 3.10.3	NVD

References

https://github.com/nltk/nltk/security/advisories/GHSA-3gq4-3j92-5w49vendor-advisory, exploit
https://www.vulncheck.com/advisories/nltk-path-traversal-via-corpus-reader-constructorsthird-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.