Is CVE-2026-18692 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-18692?

CVE-2026-18692 has a CVSS v3 severity of HIGH (8.8).

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CVE-2026-18692

Description

An issue in MongoDB Server's handling of timeseries bucket lifecycle could allow an authenticated user with write privileges to cause an internal reference to be used after the underlying memory has been freed. Subsequent operations could then result in a server crash or, potentially, execution of unintended code.