CVE-2026-114650— Plaintext exposure of encrypted fields via ANSI code-page corruption of database name
Quick assessment
Affected
MongoDB C# Driver
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
MongoDB .NET/C驱动程序的客户端加密支持中存在一个缺陷，可能导致本应进行客户端字段级加密的数据在未加密的情况下被写入。在某些平台的文本编码配置下，内部名称转换过程会丢失信息，导致加密层无法将操作与其配置的加密规则关联，从而使操作在未触发任何错误的情况下继续执行。因此，能够通过受影响应用程序写入数据的用户，可能会将敏感字段以明文形式持久化存储，从而破坏了客户端加密本应提供的机密性保障。目前未观察到对数据完整性或可用性的影响。
Get alerts for future matching vulnerabilities
Log in to subscribe
I. Basic Information for CVE-2026-114650
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗
Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
Plaintext exposure of encrypted fields via ANSI code-page corruption of database name
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
输出上下文语义编码不恰当
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| MongoDB | C# Driver | 2.10.0 ~ 3.13.0 | - |
|
| MongoDB | MongoDB.Libmongocrypt NuGet package | 1.0.0 ~ 1.12.0 | - |
|
II. Public POCs for CVE-2026-114650
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-114650
请登录查看更多情报信息。
Other References for CVE-2026-114650 (3)
Same Patch Batch · MongoDB · 2026-10-22 · 13 CVEs total
| CVE-2026-114648 | 7.6 HIGH | NoSQL injection via dot and dollar characters in LINQ filter field names and dictionary ke |
| CVE-2026-114649 | 6.8 MEDIUM | Authentication bypass via issuer-and-serial-only certificate equality in shared cluster ca |
| CVE-2026-114652 | 6.5 MEDIUM | Update operator injection via single-element list rewriting in the update builder |
| CVE-2026-114646 | 6.5 MEDIUM | NoSQL command injection via mismatched raw BSON length prefix written verbatim to the wire |
| CVE-2026-114654 | 6.5 MEDIUM | BSON output corruption via out-of-range binary subtype bypassing UUID and OldBinary guards |
| CVE-2026-114653 | 6.5 MEDIUM | Silent client-side encryption bypass via unescaped field-name regex in CSFLE schema builde |
| CVE-2026-114655 | 5.9 MEDIUM | KMS request injection via unsanitized key vault and provider values in libmongocrypt |
| CVE-2026-114644 | 5.9 MEDIUM | Memory-exhaustion denial of service via unbounded symbol interning during BSON/JSON deseri |
| CVE-2026-114643 | 5.4 MEDIUM | Duplicate geometry fields via unvalidated GeoJSON extra members |
| CVE-2026-114645 | 5.2 MEDIUM | Heap overflow via 32-bit length wrap of the URI username in Windows Kerberos auth message |
| CVE-2026-114647 | 4.3 MEDIUM | NoSQL operator injection via unvalidated replacement document in findOneAndReplace |
| CVE-2026-114651 | 4.0 MEDIUM | Cross-document data leak via malformed BSON array parsing in reused thread buffer |
IV. Related Vulnerabilities
Same product: C# Driver
-
CVE-2026-114654
BSON output corruption via out-of-range binary subtype bypas -
CVE-2026-114653
Silent client-side encryption bypass via unescaped field-nam -
CVE-2026-114652
Update operator injection via single-element list rewriting -
CVE-2026-114651
Cross-document data leak via malformed BSON array parsing in -
CVE-2026-114649
Authentication bypass via issuer-and-serial-only certificate
Same vendor: MongoDB
-
CVE-2026-114655
KMS request injection via unsanitized key vault and provider -
CVE-2026-114654
BSON output corruption via out-of-range binary subtype bypas -
CVE-2026-114653
Silent client-side encryption bypass via unescaped field-nam -
CVE-2026-114652
Update operator injection via single-element list rewriting -
CVE-2026-114651
Cross-document data leak via malformed BSON array parsing in
Same weakness: CWE-838
-
CVE-2026-55858
MariaDB Connector/J: Inappropriate Encoding for Output Conte -
CVE-2026-47079
Round-trip Corruption via Improper Entity Escaping in xml_bu -
CVE-2024-34006
moodle: unsanitized HTML in site log for config_log_created -
CVE-2023-5770
HTML injection in email body through email subject -
CVE-2020-7292
Web Gateway (MWG) - Inappropriate Encoding for output contex
V. Comments for CVE-2026-114650
No comments yet