Microsoft Fixes CosmosEscape Flaw That Could Allow Any Cosmos DB Takeover

### Executive summary Wiz Research discovered a critical Cosmos DB vulnerability (CosmosEscape) in the Gremlin API that could let an attacker escape the query sandbox, obtain a platform master key, enumerate Cosmos DB instances (including Microsoft internal service databases) and retrieve primary account keys; Microsoft removed the shared master key and deployed mitigations and reports no evidence of customer impact following responsible disclosure.