CVE-2026-81521
The MongoDB Go Driver's client-level bulk write operation may accept a caller-supplied database name containing a reserved separator character without escaping it before the name is used to build the target namespace for the operation. An application that passes untrusted input as a database name could therefore have the write directed at a database and collection other than the ones it intended. Only the Client.BulkWrite API is affected.
- Published Aug 27, 2026
- CVSS 7.1 high
- 0.4% chance of exploitation in the next 30 days (EPSS)