# CVE-2026-93764: Plaintext storage of encrypted fields via skipped embedded models in encryption schema generation

> CVE-2026-93764: Plaintext storage of encrypted fields via skipped embedded models in encryption schema generation. CVSS 6.5 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-93764
Last updated: 2026-09-24T16:00:04Z

- Published: 2026-09-18 17:06 UTC · Updated: 2026-09-24 16:00 UTC · Assigner: mongodb
- CVSS: 6.5 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- EPSS: 0.15%, 4th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-312

## Description

Mongoid may omit encryption rules for fields declared on embedded models when generating the client-side field-level encryption schema. Applications that enable this feature can therefore store values intended to be encrypted in readable form, with no error or warning. A party with routine read access to the database, a backup, or the underlying data files may then see data that was meant to remain unreadable outside the application.

## Affected vendors and products

- MongoDB Inc.: Mongoid

## Tracked companies

- [MongoDB Atlas](https://rewindex.com/company/mongodb-atlas.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-93764)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-93764)
- [https://jira.mongodb.org/browse/MONGOID-5989](https://jira.mongodb.org/browse/MONGOID-5989)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-93764 · Markdown: https://rewindex.com/cve/CVE-2026-93764.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-93764 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:11:30.032Z