VULNERABILITY INTELLIGENCE

CVE-2026-81521

CVSS score6.5 MEDIUM
EPSS probability0.24%
CISA KEVNot currently listed
Published2026-08-27
Last modified2026-10-06
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Description

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.

Weakness classification

  • cna@mongodb.com: CWE-99

Primary references