Plaintext exposure of encrypted fields via ANSI code-page corruption of database name
A flaw in the client-side encryption support of the MongoDB .NET/C# driver can cause data designated for client-side field-level encryption to be written without encryption. Under certain platform text-encoding configurations, an internal name conversion loses information, so the encryption layer fails to associate the operation with its configured encryption rules and the operation proceeds without an error being raised. An application user with the ability to write data through an affected application can therefore have sensitive fields persisted in plaintext, defeating the confidentiality guarantee that client-side encryption is intended to provide. No integrity or availability impact was observed.
CVE-2026-114650
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-114650
C# Driver
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
MongoDB.Libmongocrypt NuGet package
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "MongoDB",
"product": "C# Driver",
"versions": [
{
"status": "affected",
"version": "2.10.0",
"lessThan": "3.13.0",
"versionType": "semver"
}
],
"defaultStatus": "unaffected"
},
{
"vendor": "MongoDB",
"product": "MongoDB.Libmongocrypt NuGet package",
"versions": [
{
"status": "affected",
"version": "1.0.0",
"versionType": "semver",
"lessThanOrEqual": "1.12.0"
}
],
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-114650
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #52464 · Revision 1
- Added to Heist Feed
- Publisher date