CVE-2026-31827: Concurrent Execution using Shared Resource with Improper Synchronization

Alienbin is an anonymous code and text sharing web service. In 1.0.0 and earlier, the /save endpoint in server.js drops and recreates the MongoDB TTL index on the entire post collection for every new paste submission. When User B submits a paste with a short TTL e.g., 30 seconds, the TTL index is...