Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-82066— Heap Out-of-Bounds Read in MongoDB Server Query Planning Component

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是美国MongoDB公司开源的一款面向文档的数据库系统。 MongoDB Server 8.3.0至8.3.9之前版本、8.0.0至8.0.30之前版本和7.0.0至7.0.41之前版本存在缓冲区错误漏洞，该漏洞源于查询规划组件存在堆越界读取问题，可能导致具有数据库读写权限的已认证用户通过特制查询操作读取分配缓冲区之外的内存，造成内存内容泄露。

CVSS 4.3 · Medium EPSS 0.27% · P20

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 3

VendorProduct Version RangeStatus
MongoDB MongoDB Server 8.3.0< 8.3.9 affected
8.0.0< 8.0.30 affected
7.0.0< 7.0.41 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-82066

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Heap Out-of-Bounds Read in MongoDB Server Query Planning Component
Source: CVE Program / CVE List V5
Vulnerability Description
A heap out-of-bounds read security issue exists in the query planning component of MongoDB Server. An authenticated user with database read and write privileges can trigger the security issue through crafted query operations, causing the server to read memory beyond allocated buffer boundaries. The revealed memory contents may be partially observable through diagnostic query statistics output.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
MongoDB Server 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MongoDB Server是美国MongoDB公司开源的一款面向文档的数据库系统。 MongoDB Server 8.3.0至8.3.9之前版本、8.0.0至8.0.30之前版本和7.0.0至7.0.41之前版本存在缓冲区错误漏洞，该漏洞源于查询规划组件存在堆越界读取问题，可能导致具有数据库读写权限的已认证用户通过特制查询操作读取分配缓冲区之外的内存，造成内存内容泄露。
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 MongoDB Server 8.3.0 ~ 8.3.9 -

II. Public POCs for CVE-2026-82066

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-82066

请登录查看更多情报信息。

Vendor Pages for CVE-2026-82066 (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-2026-82071 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-2026-82064 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

Showing top 20 of 24 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: MongoDB Server
Same vendor: MongoDB
Same weakness: CWE-125

V. Comments for CVE-2026-82066

No comments yet

Leave a comment