Security Advisory

CVE-2026-12199

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-06-17 07:13:14

Last updated 2026-06-17 14:21:08

Assigner @huntr_ai

CVSS score 7.5

State PUBLISHED

Description

A vulnerability in `nltk.app.wordnet_app` up to version 3.9.3 allows unauthenticated remote shutdown of the local WordNet Browser HTTP server when started in its default mode. The server listens on all interfaces and processes a specific unauthenticated GET request (`/SHUTDOWN%20THE%20SERVER`) to terminate the process immediately via `os._exit(0)`. This results in a denial of service, impacting service availability. The issue arises due to insufficient authentication and protection mechanisms for critical server functions.

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