Is CVE-2026-18690 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-18690?

CVE-2026-18690 has a CVSS v3 severity of HIGH (8.1).

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CVE-2026-18690

Description

An issue in MongoDB Server could allow an authenticated user with a limited database-scoped role to perform an action against protected system collections that their assigned privileges should not permit. This could result in critical system collections being dropped and recreated without proper authorization.