CVE-2026-9747 — MEDIUM (6.5)

Q: What is CVE-2026-9747?

CVE-2026-9747 is a vulnerability with a CVSS score of 6.5 (MEDIUM). Adding fromRouter:true and runtimeConstants.userRoles could cause aggregations to crash mongodb server.

Q: How severe is CVE-2026-9747?

CVE-2026-9747 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-9747?

Check the references section above for vendor advisories and patch information. Affected products include: Mongodb Mongodb.

Vulnerability Description

Adding fromRouter:true and runtimeConstants.userRoles could cause aggregations to crash mongodb server.

CVSS Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Mongodb	Mongodb	>= 7.0.0, < 7.0.35

Related Weaknesses (CWE)

CWE-617

References

https://jira.mongodb.org/browse/SERVER-123918Vendor Advisory

FAQ

What is CVE-2026-9747?

CVE-2026-9747 is a vulnerability with a CVSS score of 6.5 (MEDIUM). Adding fromRouter:true and runtimeConstants.userRoles could cause aggregations to crash mongodb server.

How severe is CVE-2026-9747?

CVE-2026-9747 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-9747?

Check the references section above for vendor advisories and patch information. Affected products include: Mongodb Mongodb.