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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://jira.mongodb.org/browse/GODRIVER-4075
https://pkg.go.dev/go.mongodb.org/mongo-driver/v2@v2.8.2

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-27 20:18

Updated : 2026-08-28 21:16

NVD link : CVE-2026-81521

Mitre link : CVE-2026-81521

CVE.ORG link : CVE-2026-81521

JSON object : View

Products Affected

No product.

CWE

CWE-99

Improper Control of Resource Identifiers ('Resource Injection')

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