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

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-18711— Use-After-Free in MongoDB Query Execution Engine Leads to Denial of Service and Potential Memory Disclosure

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8.3.8之前版本和8.0.29之前的8.0.x版本存在资源管理错误漏洞，该漏洞源于查询执行引擎在时间序列集合查询中内部引用在底层内存释放后被重用，可能导致服务器崩溃或查询结果中披露释放的内存内容。

CVSS 7.1 · High EPSS 0.49% · P40

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 2

VendorProduct Version RangeStatus
MongoDB MongoDB Server 8.3.0< 8.3.8 affected
8.0< 8.0.29 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-18711

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
Use-After-Free in MongoDB Query Execution Engine Leads to Denial of Service and Potential Memory Disclosure
Source: CVE Program / CVE List V5
Vulnerability Description
An issue in MongoDB Server's query execution engine could allow an authenticated user with read and write privileges to cause an internal reference to be used after the underlying memory has been freed, when running certain queries against time-series collections. This could result in a server crash or disclosure of freed memory contents within query results.
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:H
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
MongoDB Server 资源管理错误漏洞
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8.3.8之前版本和8.0.29之前的8.0.x版本存在资源管理错误漏洞，该漏洞源于查询执行引擎在时间序列集合查询中内部引用在底层内存释放后被重用，可能导致服务器崩溃或查询结果中披露释放的内存内容。
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 ~ 8.3.8 -

II. Public POCs for CVE-2026-18711

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

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-18711

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-18711 (1)

Same Patch Batch · MongoDB · 2026-08-11 · 25 CVEs total

CVE-2026-18692 8.8 HIGH Use-After-Free in MongoDB Timeseries Bucket Handling Leads to Denial of Service and Potent
CVE-2026-18691 8.8 HIGH Improper Authentication in MongoDB Intra-Cluster Connections Allows Credential Exposure
CVE-2026-18690 8.1 HIGH Improper Authorization in MongoDB Server Allows Unauthorized Actions on System Collections
CVE-2026-18712 8.1 HIGH Improper Authorization in MongoDB Queryable Encryption Maintenance Operations Allows Unaut
CVE-2026-18693 7.6 HIGH Out-of-Bounds Read/Write in MongoDB Timeseries Bucket Handling Leads to Denial of Service
CVE-2026-18697 7.5 HIGH Improper Input Validation in MongoDB Aggregation Framework Allows Unauthenticated Denial o
CVE-2026-18687 7.1 HIGH Improper Validation in MongoDB Queryable Encryption Maintenance Operation Leads to Denial
CVE-2026-18694 7.1 HIGH Out-of-Bounds Read in MongoDB Geospatial Query Processing Leads to Denial of Service and P
CVE-2026-18688 7.1 HIGH Out-of-Bounds Read in MongoDB Aggregation Framework Leads to Denial of Service and Potenti
CVE-2026-18706 6.6 MEDIUM Use-After-Free in MongoDB $graphLookup Aggregation Stage Leads to Denial of Service and Po
CVE-2026-18700 6.5 MEDIUM Use-After-Free in MongoDB Geospatial Validation Leads to Denial of Service
CVE-2026-18704 6.5 MEDIUM Improper Authorization in MongoDB Aggregation Framework Allows Read-Only User to Perform U
CVE-2026-18701 6.5 MEDIUM Type Confusion in MongoDB Query Subsystem Leads to Denial of Service
CVE-2026-18705 6.5 MEDIUM Improper Authorization in MongoDB Atlas Vector Search Allows Unauthorized Access to Protec
CVE-2026-18696 6.5 MEDIUM Improper Authorization in MongoDB applyOps Command Handling Allows Unauthorized DDL Operat
CVE-2026-18695 6.5 MEDIUM Improper Input Validation in MongoDB Timeseries Query Processing Leads to Denial of Servic
CVE-2026-18699 6.5 MEDIUM Improper Input Validation in MongoDB Query Planner Leads to Denial of Service
CVE-2026-18710 6.5 MEDIUM Cleartext Storage of Sensitive Information in MongoDB Driver Logging During Client Initial
CVE-2026-18709 6.4 MEDIUM Missing Authorization in MongoDB Sharded Transaction Commit/Abort Handling Leads to Cross-
CVE-2026-18702 6.4 MEDIUM Improper Authorization in MongoDB profile Command Allows Unauthorized Modification of Serv

Showing top 20 of 25 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: MongoDB Server
Same vendor: MongoDB
Same weakness: CWE-416

V. Comments for CVE-2026-18711

No comments yet

Leave a comment