CVE-2026-114650
A flaw in the client-side encryption support of the MongoDB .NET/C# driver can cause data…
- Risk score
- 46/100
- CVSS
- 5.9 v3.1
- Exploit chance (30 days)
- 0.1%
- Published
- 22 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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 th…
- Affected
- See advisory
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 5.9 medium
- On your watchlist: .net
References
Original description
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.
Last activity 22 Oct 2026. Patch Forecast updates every hour.