CVE-2026-33231

NLTK (Natural Language Toolkit) is a suite of open source Python modules, data sets, and tutorials supporting research and development in Natural Language Processing. In versions 3.9.3 and prior, `nltk.app.wordnet_app` allows unauthenticated remote shutdown of the local WordNet Browser HTTP server when it is started in its default mode. A simple `GET /SHUTDOWN%20THE%20SERVER` request causes the process to terminate immediately via `os._exit(0)`, resulting in a denial of service. Commit bbaae83db86a0f49e00f5b0db44a7254c268de9b patches the issue.
Configurations

Configuration 1 (hide)

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

History

10 Jul 2026, 12:16

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:37275 -

30 Jun 2026, 03:18

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:19712 -
  • () https://access.redhat.com/errata/RHSA-2026:24977 -
  • () https://access.redhat.com/security/cve/CVE-2026-33231 -
  • () https://bugzilla.redhat.com/show_bug.cgi?id=2449836 -
  • () https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33231.json -

17 Jun 2026, 10:37

Type Values Removed Values Added
Summary
  • (es) NLTK (Natural Language Toolkit) es un conjunto de módulos Python de código abierto, conjuntos de datos y tutoriales que apoyan la investigación y el desarrollo en Procesamiento del Lenguaje Natural. En las versiones 3.9.3 y anteriores, 'nltk.app.wordnet_app' permite el apagado remoto no autenticado del servidor HTTP del navegador WordNet local cuando se inicia en su modo predeterminado. Una simple solicitud 'GET /SHUTDOWN%20THE%20SERVER' provoca que el proceso termine inmediatamente a través de 'os._exit(0)', lo que resulta en una denegación de servicio. El commit bbaae83db86a0f49e00f5b0db44a7254c268de9b corrige el problema.

23 Mar 2026, 19:15

Type Values Removed Values Added
CPE cpe:2.3:a:nltk:nltk:*:*:*:*:*:*:*:*
First Time Nltk nltk
Nltk
References () https://github.com/nltk/nltk/commit/bbaae83db86a0f49e00f5b0db44a7254c268de9b - () https://github.com/nltk/nltk/commit/bbaae83db86a0f49e00f5b0db44a7254c268de9b - Patch
References () https://github.com/nltk/nltk/security/advisories/GHSA-jm6w-m3j8-898g - () https://github.com/nltk/nltk/security/advisories/GHSA-jm6w-m3j8-898g - Exploit, Vendor Advisory

20 Mar 2026, 23:16

Type Values Removed Values Added
New CVE

Information

Published : 2026-03-20 23:16

Updated : 2026-07-15 02:20


NVD link : CVE-2026-33231

Mitre link : CVE-2026-33231

CVE.ORG link : CVE-2026-33231


JSON object : View

Products Affected

nltk

  • nltk
CWE
CWE-306

Missing Authentication for Critical Function