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CVE-2026-33231

nvd nist
Published: Mar 20, 2026Modified: Mar 23, 2026

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7.5
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploitability: 3.9 / Impact: 3.6
Source: security-advisories@github.com (Secondary)

Description

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.

Affected (1)

Products: Nltk: Nltk
Nltk
1 product
Nltk
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Nltk
Up to 3.9.3

Related CWEs

CWE-306
Missing Authentication for Critical Function
The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

References (2)

Source: security-advisories@github.com
Patch
Source: security-advisories@github.com
ExploitVendor Advisory

Timeline

No history available yet.