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CVE-2026-126817 Mongoid stores encrypted fields in plaintext when two models share a collection

6.0 medium

Medium (6.0) in mongodb ruby driver.

On this page
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.

Severity

CVSS 4.0

6.0 medium
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

CVSS 3.1

6.5 medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE
CWE-312 Cleartext Storage of Sensitive Information
OWASP Top 10
A06:2025 Insecure Design
Published
Assigned by
mongodb (CNA)
NVD analysis
Awaiting analysis
Record from
the NVD, synced

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Affected

  • mongodb:ruby driver

Versions

From the CNA's record in the CVE List.

ProductAffected
MongoDB Ruby Driver9.0.0
MongoDB Ruby Driver9.0.1
MongoDB Ruby Driver9.0.2
MongoDB Ruby Driver9.0.3
MongoDB Ruby Driver9.0.4
MongoDB Ruby Driver9.0.5
MongoDB Ruby Driver9.0.6
MongoDB Ruby Driver9.0.7
MongoDB Ruby Driver9.0.8
MongoDB Ruby Driver9.0.9
MongoDB Ruby Driver9.0.10
MongoDB Ruby Driver9.0.11
MongoDB Ruby Driver9.0.12
MongoDB Ruby Driver9.1.0
MongoDB Ruby Driver9.1.1

Attack patterns (CAPEC)

  • CAPEC-37 Retrieve Embedded Sensitive Data Likelihood: High · Severity: Very High

The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.

References

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