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VULNERABILITIES

CVE-2026-62388 Details

Description

NLTK versions before 3.10.0 default to ENFORCE=False in pathsec.py, causing all security validation functions to emit warnings instead of raising exceptions. Attackers can bypass path traversal and pickle deserialization protections by exploiting the disabled security controls that are only active when manually enabled.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [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

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/nltk/nltk/security/advisories/GHSA-p3m8-78j2-g5p3 CISA-ADPExploitMitigationVendor Advisory
https://github.com/nltk/nltk/security/advisories/GHSA-p3m8-78j2-g5p3 [email protected]ExploitMitigationVendor Advisory
https://www.vulncheck.com/advisories/nltk-before-insecure-default-configuration-pathsec [email protected]Third Party Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-1188Initialization of a Resource with an Insecure Default[email protected]

Affected Products

ProductVersions
nltk nltk
< 3.10.0

CPE

  • cpe:2.3:a:nltk:nltk:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-62388
NVD Published Date:
Aug 22, 2026
NVD Last Modified:
Aug 27, 2026
Source:
[email protected]
CVE-2026-62388 Details - Not Deferred