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MongoDBCVE-2026-93763

MongoDB Mongoid: information disclosure

High7.1CVE-2026-93763 · Published Sep 18, 2026 · updated Sep 24, 2026

A protection mechanism failure in the object-document mapper's encryption configuration generation can cause fields that an application declared for client-side field-level encryption to be written and kept in cleartext, without any error or warning. A party holding ordinary read access to the database can then read values that were intended to be protected from that party. This may result in unintended disclosure of sensitive information.

MongoDB advisory

Affected versions

PackageAffectedFixed in
Mongoid
Product
<= 9.1.0No fix yet
>= 9.0.0, <= 9.0.11No fix yet
Details and references
CVSS 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Severity from
the vendor (its own CVE record or advisory)
Weakness
CWE-312

More MongoDB advisories

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MongoDB Mongoid: unsafe reflection
Critical9.2Sep 18
MongoDB Mongoid: cleartext storage
High7.1Sep 18
MongoDB Mongoid: code injection
High8.8Sep 18
Mongoid does not restrict
High8.3Sep 18
MongoDB Mongoid: regular expression denial of service
High8.7Sep 18
MongoDB Mongoid: insecure direct object reference
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