CVE-2026-62388

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/nltk/nltk/security/advisories/GHSA-p3m8-78j2-g5p3	Exploit Mitigation Vendor Advisory
https://www.vulncheck.com/advisories/nltk-before-insecure-default-configuration-pathsec	Third Party Advisory
https://github.com/nltk/nltk/security/advisories/GHSA-p3m8-78j2-g5p3	Exploit Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

14 Oct 2026, 13:10

Type	Values Removed	Values Added
Summary		(es) Las versiones de NLTK anteriores a la 3.10.0 tienen ENFORCE=False por defecto en pathsec.py, lo que provoca que todas las funciones de validación de seguridad emitan advertencias en lugar de lanzar excepciones. Los atacantes pueden eludir las protecciones de salto de ruta y deserialización de pickle al explotar los controles de seguridad deshabilitados que solo están activos cuando se habilitan manualmente.

Information

Published : 2026-08-22 15:16

Updated : 2026-10-14 13:10

NVD link : CVE-2026-62388

Mitre link : CVE-2026-62388

CVE.ORG link : CVE-2026-62388

JSON object : View

Products Affected

nltk

nltk

CWE

CWE-1188

Initialization of a Resource with an Insecure Default

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