CVE-2026-4358— Memory safety issues in slot-based execution hash table spill
Quick assessment
Affected
MongoDB Inc MongoDB Server
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 Server是美国MongoDB公司的一套开源的NoSQL数据库。该数据库提供面向集合的存储、动态查询、数据复制及自动故障转移等功能。 MongoDB Server存在安全漏洞，该漏洞源于slot-based execution引擎中内存哈希表溢出到磁盘时，特制的聚合查询可能导致双重释放或释放后重用内存问题。
Possible ATT&CK Techniques 1 AI
T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2026-4358
Vulnerability Information
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Vulnerability Title
Memory safety issues in slot-based execution hash table spill
Source: CVE Program / CVE List V5
Vulnerability Description
A specially crafted aggregation query with $lookup by an authenticated user with write privileges can cause a double-free or use-after-free memory issue in the slot-based execution (SBE) engine when an in-memory hash table is spilled to disk.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
双重释放
Source: CVE Program / CVE List V5
Vulnerability Title
MongoDB Server 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MongoDB Server是美国MongoDB公司的一套开源的NoSQL数据库。该数据库提供面向集合的存储、动态查询、数据复制及自动故障转移等功能。 MongoDB Server存在安全漏洞，该漏洞源于slot-based execution引擎中内存哈希表溢出到磁盘时，特制的聚合查询可能导致双重释放或释放后重用内存问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| MongoDB Inc | MongoDB Server | 8.2 ~ 8.2.6 | - |
|
II. Public POCs for CVE-2026-4358
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-4358 (1)
Same Patch Batch · MongoDB Inc · 2026-03-17 · 4 CVEs total
| CVE-2026-4148 | 8.8 HIGH | ExpressionContext use-after-free in classic engine $lookup and $graphLookup aggregation op |
| CVE-2026-4147 | 6.5 MEDIUM | Stack memory disclosure in filemd5 command |
| CVE-2026-4359 | 2.0 LOW | Heap-buffer-over-read in _mongoc_http_send via strstr on non-null-terminated buffer |
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V. Comments for CVE-2026-4358
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