CVE-2026-82061— Use-After-Free in MongoDB Server Query Execution Memory Tracking Subsystem Leads to Denial of Service
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.
服务器的查询执行内存跟踪子系统中存在一个“释放后使用”（use-after-free）安全漏洞。拥有读取权限的已认证用户可以通过执行一系列标准数据库命令，触发对已释放堆内存的写入操作，从而导致服务器进程崩溃或潜在的记忆体损坏。该漏洞无需任何用户交互即可触发。
Possible ATT&CK Techniques 1 AI
T1059.004 · Unix ShellAffected 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-2026-82061
Vulnerability Information
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Vulnerability Title
Use-After-Free in MongoDB Server Query Execution Memory Tracking Subsystem Leads to Denial of Service
Source: CVE Program / CVE List V5
Vulnerability Description
A use-after-free security issue exists in the server's query execution memory tracking subsystem. An authenticated user with read privileges can trigger a write to freed heap memory through a sequence of standard database commands, leading to server process crash or potential memory corruption. No user interaction is required.
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
释放后使用
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-2026-82061
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-82061 (1)
Same Patch Batch · MongoDB · 2026-09-08 · 24 CVEs total
| CVE-2026-82071 | 8.1 HIGH | Insufficient Validation of Storage Engine Configuration Options in MongoDB Server Leads to |
| 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-2026-82075 | 7.5 HIGH | Uncontrolled Resource Consumption in MongoDB Sharded Cluster Router Allows Unauthenticated |
| CVE-2026-82064 | 7.5 HIGH | Unauthenticated Denial of Service in MongoDB Server via Assertion Failure in Read Concern |
| CVE-2026-82070 | 6.5 MEDIUM | Insufficiently Protected Credentials in MongoDB Server Diagnostic Reporting Interface |
| 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-2026-82055 | 6.5 MEDIUM | Null Pointer Dereference in MongoDB Server 2dsphere Index Key Generation Leads to Denial o |
| 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-2026-82062 | 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-2026-82071
Insufficient Validation of Storage Engine Configuration Opti
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-2026-82071
Insufficient Validation of Storage Engine Configuration Opti -
CVE-2026-82073
Improper Validation in MongoDB Server Aggregation Framework
V. Comments for CVE-2026-82061
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