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CVE-2026-62385 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CNA: [email protected]CVSS-B:5.9 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/nltk/nltk/security/advisories/GHSA-568f-pv23-39p4	CISA-ADP	ExploitVendor AdvisoryMitigation
https://github.com/nltk/nltk/security/advisories/GHSA-568f-pv23-39p4	[email protected]	ExploitVendor AdvisoryMitigation
https://www.vulncheck.com/advisories/nltk-path-traversal-via-framenet-and-nkjp-readers	[email protected]	Third Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-73	External Control of File Name or Path	[email protected]

Affected Products

Product	Versions
nltk nltk	< 3.10.0
CPE cpe:2.3:a:nltk:nltk:::::::: Remediation No remediation found in references.

Change History

3 change records found show changes

Date	Action	Recorded By
Aug 31, 2026	Initial Analysis	[email protected]
Aug 24, 2026	CVE Modified	CISA-ADP
Aug 22, 2026	New CVE Received	[email protected]