CVE-2026-18687: MongoDB Server's handling of a Queryable Encryption
MongoDB Server's handling of a Queryable Encryption maintenance operation did not properly validate certain request parameters against the collection's encrypted field configuration before use. An authenticated user with readWrite privileges could submit a specially formed request that leads to a server crash or excessive internal writes, resulting in resource exhaustion and corruption of encrypted index data.
- EPSS 0.2% (6.5% percentile)
- CVSS 7.1 high