CVE-2026-114650
MEDIUMDescription
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.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
Exploit Intelligence
Low risk: more likely to be exploited than 1% of all known CVEs.
References
Related Vulnerabilities
Other CWE-838 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2019-6110 | Medium | 6.8 | 25% | - | Fix |
| CVE-2020-10996 | High | 8.1 | 1.5% | - | Fix |
| CVE-2019-18981 | Critical | 9.8 | 1.4% | - | Fix |
| CVE-2023-6512 | Medium | 6.5 | 1.3% | - | Fix |
| CVE-2026-55858 | Medium | 5.9 | 0.9% | - | - |
| CVE-2020-7292 | Medium | 4.3 | 0.9% | - | Fix |
Common questions
How do I fix CVE-2026-114650?
No published fix for CVE-2026-114650 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2026-114650 being actively exploited?
Not that we know of. CVE-2026-114650 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.11% is the estimated probability that it will be exploited in the next 30 days. That is higher than 1% of all scored CVEs.
How severe is CVE-2026-114650?
CVE-2026-114650 has a CVSS v3 base score of 5.9, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-10-23.