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CVE-2026-92757— Malformed connection string may disable field level encryption

Quick assessment

Affected
MongoDB Inc. MongoDB Entity Framework Core Provider
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.

基于 MongoDB Entity Framework Core 构建的应用程序，如果在连接字符串中指定了数据库名称，可能会意外地禁用字段级加密。

CVSS 5.5 · Medium EPSS 0.05% · P0

Affected Version Matrix 3

VendorProduct Version RangeStatus
MongoDB Inc. MongoDB Entity Framework Core Provider 8.3.1< 8.4.4 affected
9.0.1< 9.1.4 affected
10.0.0< 10.0.4 affected
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I. Basic Information for CVE-2026-92757

Vulnerability Information
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Vulnerability Title
Malformed connection string may disable field level encryption
Source: CVE Program / CVE List V5
Vulnerability Description
Applications built on MongoDB Entity Framework Core Provider which place a database name in the connection string may inadvertently disable field level encryption.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
敏感数据加密缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
MongoDB Inc. MongoDB Entity Framework Core Provider 8.3.1 ~ 8.4.4 -

II. Public POCs for CVE-2026-92757

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III. Intelligence Information for CVE-2026-92757

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Vendor Pages for CVE-2026-92757 (1)

Same Patch Batch · MongoDB Inc. · 2026-09-17 · 6 CVEs total

CVE-2026-93393 8.1 HIGH Heap overflow via oversized decrypted TLS record sequence in Windows Secure Channel stream
CVE-2026-92756 5.5 MEDIUM Combining encryption settings may disable encryption
CVE-2026-92758 5.5 MEDIUM Logs may collect sensitive information
CVE-2026-93395 5.3 MEDIUM Integer Underflow → Heap Out-of-Bounds Read in `bson_new_from_buffer()
CVE-2026-93394 3.7 LOW libmongoc SCRAM client nonce-validation bypass

IV. Related Vulnerabilities

Same product: MongoDB Entity Framework Core Provider
Same vendor: MongoDB Inc.
Same weakness: CWE-311

V. Comments for CVE-2026-92757

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