CVE-2026-62385
NLTK 3.9.4 Path Traversal via FrameNet and NKJP Readers
- State
- Published
- Severity
- 8.2 High
- Published
- Aug 22, 2026
- Updated
- Aug 24, 2026
- Reserved
- Jul 13, 2026
Description
NLTK versions before 3.10.0 contain a path traversal vulnerability in FramenetCorpusReader and NKJPCorpusReader that allows attackers to parse XML files outside the corpus root by supplying unsafe selectors or poisoned index state. Attackers can exploit frame_by_name, doc, lu, and header methods with crafted parameters to read arbitrary XML files accessible to the application.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.2 High | CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 5.9 Medium | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N | VulnCheck |
Weaknesses
- CWE-73 External Control of File Name or Path
Affected Products
| Product | Versions |
|---|---|
nltknltk |
|
References
- GitHub Security Advisory (GHSA-568f-pv23-39p4)vendor-advisory
- VulnCheck Advisory: NLTK 3.9.4 Path Traversal via FrameNet and NKJP Readersthird-party-advisory
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