CVE-2026-126817

Mongoid stores encrypted fields in plaintext when two models share a collection

Published Nov 13, 2026 CVSS 4.0 · 6 Medium EPSS n/a KEV · Not listed
Description
A flaw in the automatic client-side encryption schema generation of the Mongoid ODM may cause values that an application declared for encryption to be written and stored as cleartext when more than one model is mapped onto the same storage location. No error or warning is raised. A party holding an ordinary read-only database account, with no access to the encryption key material, may then obtain those values in clear form.

Analysis

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Remediation

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Tracking

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Advisories

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History
Type Values Removed Values Added
Description A flaw in the automatic client-side encryption schema generation of the Mongoid ODM may cause values that an application declared for encryption to be written and stored as cleartext when more than one model is mapped onto the same storage location. No error or warning is raised. A party holding an ordinary read-only database account, with no access to the encryption key material, may then obtain those values in clear form.
Title Mongoid stores encrypted fields in plaintext when two models share a collection
Weaknesses CWE-312
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}

cvssV4_0

{'score': 6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}

Subscriptions

No data.

Weaknesses
  • CWE-312

    Cleartext Storage of Sensitive Information

Sources

Status
PUBLISHED
Assigner
mongodb
Published
Updated
Nov 13, 2026, 3:40 PM
Reserved
Nov 11, 2026, 8:06 PM

No data.