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CVE-2026-81521 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://jira.mongodb.org/browse/GODRIVER-4075	[email protected]
https://pkg.go.dev/go.mongodb.org/mongo-driver/[email protected]	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-99	Improper Control of Resource Identifiers ('Resource Injection')	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

3 change records found show changes

Date	Action	Recorded By
Aug 28, 2026	CVE Modified	CISA-ADP
Aug 28, 2026	CVE Modified	[email protected]
Aug 27, 2026	New CVE Received	[email protected]