{"@context":"https://openvex.dev/ns/v0.2.0","@id":"https://database.harborguard.co/cve/CVE-2026-12199/vex.json","author":"HarborGuard Database","role":"Document Creator","timestamp":"2026-06-17T07:13:14.977Z","version":1,"tooling":"HarborGuard Database (https://database.harborguard.co)","statements":[{"vulnerability":{"name":"CVE-2026-12199","@id":"https://www.cve.org/CVERecord?id=CVE-2026-12199","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 fo"},"products":[{"@id":"cpe:2.3:a:nltk:nltk\\/nltk:*:*:*:*:*:*:*:*","identifiers":{"cpe23":"cpe:2.3:a:nltk:nltk\\/nltk:*:*:*:*:*:*:*:*"}}],"status":"affected","action_statement":"No fixed version is published yet; monitor the upstream advisory.","timestamp":"2026-06-17T07:13:14.977Z"}]}