Is CVE-2026-18706 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-18706?

CVE-2026-18706 has a CVSS v3 severity of MEDIUM (6.6).

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CVE-2026-18706

Description

An issue in MongoDB Server's $graphLookup aggregation stage could allow an authenticated user able to issue aggregation and memory-management commands to cause an internal reference to be used after the underlying memory has been freed. This could result in a server crash or, potentially, execution of unintended code.