CVE-2026-82071— Insufficient Validation of Storage Engine Configuration Options in MongoDB Server Leads to Out-of-Bounds Write
Quick assessment
Affected
MongoDB 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 中对存储引擎配置选项的校验不足，使得拥有写权限的已认证用户能够在创建集合时提供特制的参数，从而覆盖内部存储元数据。这会导致服务器进程中发生越界内存写入，引发服务器崩溃，造成服务拒绝（DoS）故障，并可能进一步导致任意代码执行。
Affected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| MongoDB | MongoDB Server | 8.3.0< 8.3.9 |
affected |
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I. Basic Information for CVE-2026-82071
Vulnerability Information
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Vulnerability Title
Insufficient Validation of Storage Engine Configuration Options in MongoDB Server Leads to Out-of-Bounds Write
Source: CVE Program / CVE List V5
Vulnerability Description
Insufficient validation of storage engine configuration options in MongoDB Server allows an authenticated user with write privileges to supply crafted parameters during collection creation that override internal storage metadata. This results in an out-of-bounds memory write in the server process, causing a denial of service via server crash, with potential for further impact including arbitrary code execution.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| MongoDB | MongoDB Server | 8.3.0 ~ 8.3.9 | - |
|
II. Public POCs for CVE-2026-82071
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Pages for CVE-2026-82071 (1)
Same Patch Batch · MongoDB · 2026-09-08 · 24 CVEs total
| CVE-2026-82061 | 8.1 HIGH | Use-After-Free in MongoDB Server Query Execution Memory Tracking Subsystem Leads to Denial |
| CVE-2026-82053 | 8.1 HIGH | Improper Session Handling in MongoDB Server LDAP Authorization Integration Leads to Incorr |
| CVE-2026-82067 | 8.1 HIGH | Improper Case Sensitivity Handling in MongoDB Server Configuration Validation May Cause Au |
| CVE-2026-82064 | 7.5 HIGH | Unauthenticated Denial of Service in MongoDB Server via Assertion Failure in Read Concern |
| CVE-2026-82075 | 7.5 HIGH | Uncontrolled Resource Consumption in MongoDB Sharded Cluster Router Allows Unauthenticated |
| CVE-2026-82055 | 6.5 MEDIUM | Null Pointer Dereference in MongoDB Server 2dsphere Index Key Generation Leads to Denial o |
| CVE-2026-82076 | 6.5 MEDIUM | Integer Overflow in Query Planner Leads to Unbounded Memory Allocation and Denial of Servi |
| CVE-2026-82065 | 6.5 MEDIUM | Insufficient Validation of Storage Configuration Options in MongoDB Server Leads to Persis |
| CVE-2026-82054 | 6.5 MEDIUM | Uncontrolled Resource Consumption in MongoDB Server JSON Pointer Parser Leads to Denial of |
| CVE-2026-82057 | 6.5 MEDIUM | Type Confusion in MongoDB Server WiredTiger Storage Engine via Custom Collection Configura |
| CVE-2026-82074 | 6.5 MEDIUM | Incorrect Authorization in MongoDB Server Aggregation Framework Allows Unauthorized Read A |
| CVE-2026-82068 | 6.5 MEDIUM | Persistent Fatal Assertion Crash in MongoDB Server via Crafted Retryable Write Commands Le |
| CVE-2026-82058 | 6.5 MEDIUM | Unhandled Exception in MongoDB Server JSON Schema Validation Error Generation Leads to Den |
| CVE-2026-82052 | 6.5 MEDIUM | $regexFindAll may crash mongod server when byte-matching multi-byte UTF-8 chars |
| CVE-2026-82073 | 6.5 MEDIUM | Improper Validation in MongoDB Server Aggregation Framework Allows Authorization Bypass an |
| CVE-2026-82070 | 6.5 MEDIUM | Insufficiently Protected Credentials in MongoDB Server Diagnostic Reporting Interface |
| CVE-2026-82062 | 5.5 MEDIUM | Improper Authorization in MongoDB Server applyOps Command Allows Writes to Arbitrary Inter |
| CVE-2026-82060 | 5.4 MEDIUM | Insufficient Validation of Shard Key Values in MongoDB Server Leads to Query Operator Inje |
| CVE-2026-82063 | 5.3 MEDIUM | Use-After-Free in MongoDB Server Cursor Management Component Leads to Denial of Service |
| CVE-2026-82056 | 5.3 MEDIUM | Race Condition in MongoDB Server Text Index Query Parsing Leads to Heap Use-After-Free and |
Showing top 20 of 24 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: MongoDB Server
-
CVE-2026-82076
Integer Overflow in Query Planner Leads to Unbounded Memory -
CVE-2026-82075
Uncontrolled Resource Consumption in MongoDB Sharded Cluster -
CVE-2026-82074
Incorrect Authorization in MongoDB Server Aggregation Framew -
CVE-2026-82073
Improper Validation in MongoDB Server Aggregation Framework -
CVE-2026-82070
Insufficiently Protected Credentials in MongoDB Server Diagn
Same vendor: MongoDB
-
CVE-2026-82076
Integer Overflow in Query Planner Leads to Unbounded Memory -
CVE-2026-82075
Uncontrolled Resource Consumption in MongoDB Sharded Cluster -
CVE-2026-82074
Incorrect Authorization in MongoDB Server Aggregation Framew -
CVE-2026-82073
Improper Validation in MongoDB Server Aggregation Framework -
CVE-2026-82070
Insufficiently Protected Credentials in MongoDB Server Diagn
V. Comments for CVE-2026-82071
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