CVE-2026-93764

Plaintext storage of encrypted fields via skipped embedded models in encryption schema generation

MEDIUM
6.5
CVSS Score
Published: September 18, 2026 at 05:06 PM UTC
Updated: September 24, 2026 at 04:27 PM UTC
1 product affected across 1 vendorMongoid

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

9.0.0 ≤ v ≤ 9.0.119.0.09.1.0
Affected range stops below 9.0.12, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

Vendor Advisory
Source: cverecord
https://jira.mongodb.org/browse/MONGOID-5989

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMmongodb
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-312

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