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CVE-2026-92756— Combining encryption settings may disable 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 提供者构建的应用程序，如果同时使用了独立的加密设置和该提供者自身的加密设置，可能会无声地丢失 TLS 和模式映射（schema-map）配置，从而导致受保护的字段以未加密的形式存储在数据库中。

CVSS 5.5 · Medium EPSS 0.05% · P0

Possible ATT&CK Techniques 1 AI

T1538 · Cloud Service Dashboard

Affected Version Matrix 3

VendorProduct Version RangeStatus
MongoDB Inc. MongoDB Entity Framework Core Provider 8.0.0< 8.4.3 affected
9.0.0< 9.1.3 affected
10.0.0< 10.0.3 affected
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I. Basic Information for CVE-2026-92756

Vulnerability Information
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Vulnerability Title
Combining encryption settings may disable encryption
Source: CVE Program / CVE List V5
Vulnerability Description
Applications built on MongoDB Entity Framework Core Provider which combine independent encryption settings and this provider's encryption settings may silently lose TLS and schema-map settings leading to protected fields being stored unencrypted in the database.
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 8.0.0 ~ 8.4.3 -

II. Public POCs for CVE-2026-92756

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III. Intelligence Information for CVE-2026-92756

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Vendor Pages for CVE-2026-92756 (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-2026-92757 5.5 MEDIUM Malformed connection string may disable field level 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-2026-92756

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