CVE-2026-93762: MongoDB Mongoid

Critical severity, CVSS 9.8. EPSS: 0.6% chance of exploitation in the next 30 days.

Mongoid contains an unsafe reflection weakness in the query path used for embedded documents. An application that passes an externally supplied field name to certain in-memory query methods may allow an unauthenticated party to obtain unintended disclosure of stored document data and to permanently remove stored records.

Affected products

• MongoDB Mongoid: from 7.5.0, before 7.5.4 (fixed in 7.5.4); from 7.6.0, before 7.6.2 (fixed in 7.6.2); from 8.0.0, before 8.0.12 (fixed in 8.0.12); from 8.1.0, before 8.1.13 (fixed in 8.1.13); from 9.0.0, before 9.0.12 (fixed in 9.0.12); version 9.1.0 only

Published 2026-09-18. Last modified 2026-09-24.