CVE-2026-12199
HighCVSS 7.5Exploitation Probability (EPSS)
Low risk36th percentile — higher than 36% of all known CVEs
Summary
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.
Risk Assessment
This vulnerability results in a denial of service, impacting service availability, which may lead to disruptions in applications relying on WordNet.
Recommendation
It is recommended to update to the latest version of `nltk.app.wordnet_app` to mitigate this vulnerability and to implement appropriate authentication and protection mechanisms for critical server functions.
Original NVD description (English source)
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.